Water Body Name: | Sheep Creek |
Water Body ID: | CAR6282000020070828155444 |
Water Body Type: | River & Stream |
Lines of Evidence (LOEs) for Decision ID 8994 |
LOE ID: | 7961 |
Pollutant: | Acid Neutralizing Capacity |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled Sheep Creek under the Region 6 SWAMP program. One sample collected on March 20, 2003 was analyzed for ANC. The result was 7.8 mg/L CaCO3. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | There are no California or federal standards or criteria for acid neutralizing capacity (ANC) per se. However, ANC is equivalent to alkalinity, and the U.S. Environmental Protection Agency "Gold Book" recommends alkalinity greater than 20 mg/L CaCO3 unless natural alkalinity is lower. |
Objective/Criterion Reference: | Quality Criteria for Water 1986. United States Environmental Protection Agency. Office of Water. Regulations and Standards. Washington D.C. EPA 440/5-86-001. |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled: "Sheep Creek below Lake Arrowhead Scout Camp near Lake Arrowhead." |
Temporal Representation: | One sample was collected on March 20, 2003. |
Environmental Conditions: | Sheep Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Sheep Creek is designated for both the Cold Freshwater Habitat and the Warm Freshwater Habitat beneficial uses. |
QAPP Information: | The data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 8982 |
LOE ID: | 5292 |
Pollutant: | Boron |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 5 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled boron under the Region 6 SWAMP program between 2001 and 2005. Boron concentrations in 7 of 9 samples were estimated or below detection level values. Concentrations in the remaining samples were 9.9 and 24 ug/L. The annual average objective was not exceeded. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The site-specific objective from Lahontan Basin Plan Table 3-21 includes an annual average boron concentration of 0.01 mg/L (or 10 ug/L), and a 90th percentile value of 0.02 mg/L (or 20 ug/L). |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled: "Sheep Creek below Lake Arrowhead Scout Camp near Lake Arrowhead." |
Temporal Representation: | Nine samples were collected between 2001 and 2005. One sample was collected in 2001, and samples were collected quarterly between December 2002 and July 2005. |
Environmental Conditions: | Sheep Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Sheep Creek is designated for both the Cold Freshwater Habitat and the Warm Freshwater Habitat beneficial uses. |
QAPP Information: | Data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): | |
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LOE ID: | 7960 |
Pollutant: | Boron |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 9 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled boron under the Region 6 SWAMP program between 2001 and 2005. Boron concentrations in 7 of 9 samples were estimated or below detection level values. Concentrations in the remaining samples were 9.9 and 24 ug/L. The criterion was not exceeded. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The California State Notification Level criterion is 1000 ug/L. |
Objective/Criterion Reference: | Compilation of Water Quality Goals |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled: "Sheep Creek below Lake Arrowhead Scout Camp near Lake Arrowhead." |
Temporal Representation: | Nine samples were collected between 2001 and 2005. One sample was collected in 2001, and samples were collected quarterly between December 2002 and July 2005. |
Environmental Conditions: | Sheep Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Sheep Creek is designated for both the Cold Freshwater Habitat and the Warm Freshwater Habitat beneficial uses. |
QAPP Information: | Data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 8987 |
LOE ID: | 5297 |
Pollutant: | Chloride |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 12 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled chloride under the Region 6 SWAMP program. Chloride concentrations in 12 quarterly samples ranged from 5.08 to 27.2 mg/L. The MCL was not violated. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | California Maximum Contaminant Levels (MCLs) apply to ambient waters under the Lahontan Basin Plan's "Chemical Constituents" objective. The MCL for chloride is 250 mg/L. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled: "Sheep Creek below Lake Arrowhead Scout Camp near Lake Arrowhead." |
Temporal Representation: | Twelve quarterly samples were collected between 2001 and 2005. |
Environmental Conditions: | Sheep Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Sheep Creek is designated for both the Cold Freshwater Habitat and the Warm Freshwater Habitat beneficial uses. |
QAPP Information: | Data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): | |
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LOE ID: | 5296 |
Pollutant: | Chloride |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 5 |
Number of Exceedances: | 4 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled chloride under the Region 6 SWAMP program between 2001 and 2005. Chloride concentrations in 12 quarterly samples ranged from 5.08 to 27.2 mg/L. The annual average objective was violated in 4 of 5 years. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The site specific objective from Lahontan Basin Plan Table 3-21 includes an annual average chloride concentration of 6.0 mg/L and a 90th percentile value of 7.8 mg/L. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled: "Sheep Creek below Lake Arrowhead Scout Camp near Lake Arrowhead." |
Temporal Representation: | Twelve quarterly samples (2 to 4 per year) were collected between 2001 and 2005. |
Environmental Conditions: | Sheep Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Sheep Creek is designated for both the Cold Freshwater Habitat and the Warm Freshwater Habitat beneficial uses. |
QAPP Information: | Data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 7728 |
LOE ID: | 5820 |
Pollutant: | Dissolved oxygen saturation |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 3 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled percent saturation of dissolved oxygen under the Region 6 SWAMP program in 2004 and 2005. Percent saturation in three samples ranged from 93 to 100 percent. The objective was not violated. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The water quality objective in the Lahontan Basin Plan states that percent saturation shall not be depressed by more than 10 percent and the minimum dissolved oxygen concentration shall not be less than 80 percent saturation. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled: "Sheep Creek below Lake Arrowhead Scout Camp near Lake Arrowhead." |
Temporal Representation: | Three samples were collected quarterly between November 2004 and July 2005. |
Environmental Conditions: | Sheep Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Sheep Creek is designated for both the Cold Freshwater Habitat and the Warm Freshwater Habitat beneficial uses. |
QAPP Information: | Data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 7797 |
LOE ID: | 5298 |
Pollutant: | Fluoride |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 5 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled fluoride under the Region 6 SWAMP program between 2001 and 2005. Fluoride concentrations in 9 quarterly samples were all estimated or below detection level values. The annual average objective was not violated. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The site specific objective from Lahontan Basin Plan Table 3-21 includes an annual average fluoride concentration of 0.13 mg/L and a 90th percentile value of 0.22 mg/L. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled: "Sheep Creek below Lake Arrowhead Scout Camp near Lake Arrowhead." |
Temporal Representation: | Nine quarterly samples were collected between 2001 and 2005. |
Environmental Conditions: | Sheep Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Sheep Creek is designated for both the Cold Freshwater Habitat and the Warm Freshwater Habitat beneficial uses. |
QAPP Information: | Data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): | |
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LOE ID: | 5299 |
Pollutant: | Fluoride |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 9 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled fluoride under the Region 6 SWAMP program between 2001 and 2005. Fluoride concentrations in 9 quarterly samples were all estimated or below detection level values. The MCL was not violated. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | California Maximum Contaminant Levels (MCLs) apply to ambient waters under the Lahontan Basin Plan's "Chemical Constituents" objective. The MCL for fluoride is 2 mg/L. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled: "Sheep Creek below Lake Arrowhead Scout Camp near Lake Arrowhead." |
Temporal Representation: | Nine quarterly samples were collected between 2001 and 2005. |
Environmental Conditions: | Sheep Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Sheep Creek is designated for both the Cold Freshwater Habitat and the Warm Freshwater Habitat beneficial uses. |
QAPP Information: | Data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 16109 |
LOE ID: | 7983 |
Pollutant: | Nitrate |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 12 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled Sheep Creek under the Region 6 SWAMP program between 2001 and 2005. Twelve samples each were analyzed for nitrite and nitrite plus nitrate, both expressed "as nitrogen." Nitrate was calculated by subtraction. Calculated "nitrate as nitrogen" concentrations included four estimated or below detection level values. The remaining 8 samples ranged from 0.046 to 0.24 mg/L. Expressed "as nitrate", these samples ranged from 0.207 to 1.08 mg/L. The MCL was not violated. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | California Maximum Contaminant Levels (MCLs) apply to ambient waters under the Lahontan Basin Plan's "Chemical Constituents" objective. The MCL for nitrate is 45 mg/L expressed "as nitrate," equivalent 10 mg/L expressed "as nitrogen." |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled: "Sheep Creek below Lake Arrowhead Scout Camp near Lake Arrowhead." |
Temporal Representation: | Twelve quarterly samples each (2 to 4 per year) were collected for nitrite and nitrite plus nitrate between 2001 and 2005. |
Environmental Conditions: | Sheep Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Sheep Creek is designated for both the Cold Freshwater Habitat and the Warm Freshwater Habitat beneficial uses. |
QAPP Information: | Data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): | |
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LOE ID: | 7971 |
Pollutant: | Nitrate |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 5 |
Number of Exceedances: | 3 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled Sheep Creek under the Region 6 SWAMP program between 2001 and 2005. Twelve samples each were analyzed for nitrite and nitrite plus nitrate, both expressed "as nitrogen." Nitrate was calculated by subtraction. Calculated "nitrate as nitrogen" concentrations included four estimated or below detection level values. The remaining 8 samples ranged from 0.046 to 0.24 mg/L. Expressed "as nitrate", these samples ranged from 0.207 to 1.08 mg/L. Two of five calculated annual averages were estimates due to estimated and below detection level data. The remaining averages ranged from 0.458 to 0.893 mg/L nitrate "as nitrate." The site-specific objective was violated in 3 of 5 years. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The site-specific objective from Lahontan Basin Plan Table 3-21 includes an annual average nitrate concentration of 0.3 mg/L and a 90th percentile value of 1.3 mg/L, both expressed "as nitrate." |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled: "Sheep Creek below Lake Arrowhead Scout Camp near Lake Arrowhead." |
Temporal Representation: | Twelve quarterly samples each (2 to 4 per year) were collected for nitrite and nitrite plus nitrate between 2001 and 2005. |
Environmental Conditions: | Sheep Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Sheep Creek is designated for both the Cold Freshwater Habitat and the Warm Freshwater Habitat beneficial uses. |
QAPP Information: | Data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 8988 |
LOE ID: | 7964 |
Pollutant: | Nitrate/Nitrite (Nitrite + Nitrate as N) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 12 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled nitrite plus nitrate under the Region 6 SWAMP program between 2001 and 2005. Of 12 quarterly samples, one was below the detection level and two were estimated values. Nitrite plus nitrate concentrations in the remaining samples ranged from 0.046 to 0.213 mg/L. The MCL was not violated. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | California Maximum Contaminant Levels (MCLs) apply to ambient waters under the Lahontan Basin Plan's "Chemical Constituents" objective. The MCL for nitrite plus nitrate (expressed "as nitrogen") is 10 is mg/L. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled: "Sheep Creek below Lake Arrowhead Scout Camp near Lake Arrowhead." |
Temporal Representation: | Twelve quarterly samples (2 to 4 per year) were collected between 2001 and 2005. |
Environmental Conditions: | Sheep Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Sheep Creek is designated for both the Cold Freshwater Habitat and the Warm Freshwater Habitat beneficial uses. |
QAPP Information: | Data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 8993 |
LOE ID: | 7963 |
Pollutant: | Nitrite |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 12 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled nitrite under the Region 6 SWAMP program between 2001 and 2005. Of 23 quarterly samples, 6 had nitrite concentrations below the detection level and one was an estimated value. Nitrite concentrations in the remaining samples ranged from 0.001 to 0.007 mg/L. The MCL was not violated. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | California Maximum Contaminant Levels (MCLs) apply to ambient waters under the Lahontan Basin Plan's "Chemical Constituents" objective. The MCL for nitrite is mg/L. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled: "Sheep Creek below Lake Arrowhead Scout Camp near Lake Arrowhead." |
Temporal Representation: | Twelve quarterly samples (2 to 4 per year) were collected between 2001 and 2005. |
Environmental Conditions: | Sheep Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Sheep Creek is designated for both the Cold Freshwater Habitat and the Warm Freshwater Habitat beneficial uses. |
QAPP Information: | Data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 7727 |
LOE ID: | 5305 |
Pollutant: | Oxygen, Dissolved |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 10 |
Number of Exceedances: | 1 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey samplex dissolved oxygen under the Region 6 SWAMP program between 2001 and 2005. Dissolved oxygen concentrations in 10 samples ranged from 3.7 to 10.1 mg/L. One sample was below the 1-day minimum objective. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The applicable water quality objective from Lahontan Basin Plan Table 3-6 is a 1-day minimum concentration is 4.0 mg/L. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station, Sheep Creek below Lake Arrowhead Scout Camp near Lake Arrowhead, was sampled. |
Temporal Representation: | Ten samples were collected approximately quarterly between 2001 and 2005. |
Environmental Conditions: | Sheep Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Sheep Creek is designated for both the Cold Freshwater Habitat and the Warm Freshwater Habitat beneficial uses. |
QAPP Information: | Data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 8990 |
LOE ID: | 7985 |
Pollutant: | Phosphate |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 5 |
Number of Exceedances: | 1 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled Sheep Creek under the Region 6 SWAMP program between 2001 and 2005. Concentrations of PO4 in 12 samples included two estimated values and two values below the detection level.
Concentrations in the remaining samples ranged from 0.012 to 0.057 mg/L. In two of five years, samples were all estimates or below the detection level. Calculated annual average PO4 concentrations in the remaining samples were 0.014, 0.097 and 0.016 mg/L. The annual average objective was exceeded in one of 5 years. Two additional samples were collected for dissolved hydrolyzable P plus PO4; one of these samples was 0.02 mg/L and the other was below the detection level. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The site-specific objective for Deep Creek Station 5, from Lahontan Basin Plan Table 3-21, applies under the tributary rule. The objective includes an annual average total dissolved orthophosphate concentration of 0.05 mg/L, and a 90th percentile value of 0.13 mg/L. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled: "Sheep Creek below Lake Arrowhead Scout Camp near Lake Arrowhead." |
Temporal Representation: | Twelve quarterly samples (2 to 4 per year) were collected for PO4 between 2001 and 2005 Two additional samples for dissolved hydrolyzable P plus PO4 in October 2001 and February 2002. |
Environmental Conditions: | Sheep Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Sheep Creek is designated for both the Cold Freshwater Habitat and the Warm Freshwater Habitat beneficial uses. |
QAPP Information: | Data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 16111 |
LOE ID: | 8046 |
Pollutant: | Phosphorus |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 8 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled Sheep Creek under the Region 6 SWAMP program between 2002 and 2005. One of 8 quarterly samples for total phosphorus was an estimated value and two samples were below the detection level. Concentrations of total phosphorus in the remaining samples ranged from 0.033 to 0.072 mg/L. No biological data are available for assessment of compliance with the objective for biostimulatory substances. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | There is no site-specific numeric objective for total phosphorus for Sheep Creek. The Lahontan Basin Plan's narrative objective for biostimulatory substances states:
"Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect the water for beneficial uses." |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled: "Sheep Creek below Lake Arrowhead Scout Camp near Lake Arrowhead." |
Temporal Representation: | Eight quarterly samples (1 to 4 per year) were collected between 2002 and 2005. |
Environmental Conditions: | Sheep Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Sheep Creek is designated for both the Cold Freshwater Habitat and the Warm Freshwater Habitat beneficial uses. |
QAPP Information: | Data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 7725 |
LOE ID: | 5300 |
Pollutant: | Specific Conductance |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 11 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey measured specific conductance under the Region 6 SWAMP program. Eleven laboratory measurements of specific conductance ranged from 118 to 249 uS/cm. Three field measurements ranged from 183 to 305 uS/cm. The objective was not exceeded. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | California Maximum Contaminant Levels (MCLs) apply to ambient waters under the Lahontan Basin Plan's "Chemical Constituents" objective. The MCL for specific conductance is 900 microsiemens per centimeter (uS/cm). |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled: "Sheep Creek below Lake Arrowhead Scout Camp near Lake Arrowhead." |
Temporal Representation: | Eleven laboratory measurements and three field measurements were taken approximately quarterly between 2001 and 2005. |
Environmental Conditions: | Sheep Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Sheep Creek is designated for both the Cold Freshwater Habitat and the Warm Freshwater Habitat beneficial uses. |
QAPP Information: | Data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 7796 |
LOE ID: | 5301 |
Pollutant: | Sulfates |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 12 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled sulfate under the Region 6 SWAMP program between 2001 and 2005. Sulfate concentrations in 12 quarterly samples ranged from 1.3 to 9.5 mg/L. The MCL was not violated. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | California Maximum Contaminant Levels (MCLs) apply to ambient waters under the Lahontan Basin Plan's "Chemical Constituents" objective. The MCL for sulfate is 250 mg/L. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled: "Sheep Creek below Lake Arrowhead Scout Camp near Lake Arrowhead." |
Temporal Representation: | Twelve quarterly samples (2 to 4 per year) were collected between 2001 and 2005. |
Environmental Conditions: | Sheep Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Sheep Creek is designated for both the Cold Freshwater Habitat and the Warm Freshwater Habitat beneficial uses. |
QAPP Information: | Data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): | |
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LOE ID: | 5302 |
Pollutant: | Sulfates |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 5 |
Number of Exceedances: | 2 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled sulfate under the Region 6 SWAMP program. Sulfate concentrations in 12 samples ranged from 1.3 to 9.5 mg/L. The annual average objective was violated in two of five years. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The site-specific objective from Lahontan Basin Plan Table 3-21 includes an annual average sulfate concentration of 3.4 mg/L, and a 90th percentile value of 6.9 mg/L. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled: "Sheep Creek below Lake Arrowhead Scout Camp near Lake Arrowhead." |
Temporal Representation: | Twelve quarterly samples (2 to 4 per year) were collected between 2001 and 2005. |
Environmental Conditions: | Sheep Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Sheep Creek is designated for both the Cold Freshwater Habitat and the Warm Freshwater Habitat beneficial uses. |
QAPP Information: | Data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 7726 |
LOE ID: | 5307 |
Pollutant: | Temperature, water |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 12 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey measured water temperature under the Region 6 SWAMP program between 2001 and 2005. Temperatures in 12 measurements ranged from 3.5 to 17 degrees Celsius. Sampling frequency was insufficient to allow determination of the natural temperature regime or to detect changes. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The relevant language from the Lahontan Basin Plan's temperature objective is as follows: "The natural receiving water temperature of a l waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such an alteration in temperature does not adversely affect the water for beneficial uses.
For waters designated WARM, water temperature shall not be altered by more than five degrees Fahrenheit ... above or below the natural temperature. For waters designated COLD, the temperature shall not be altered." |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled: "Sheep Creek below Lake Arrowhead Scout Camp near Lake Arrowhead." |
Temporal Representation: | Twelve temperature measurements were taken between 2001 and 2005. |
Environmental Conditions: | Sheep Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Sheep Creek is designated for both the Cold Freshwater Habitat and the Warm Freshwater Habitat beneficial uses. |
QAPP Information: | Data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 16110 |
LOE ID: | 5303 |
Pollutant: | Total Dissolved Solids |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 5 |
Number of Exceedances: | 5 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled Total Dissolved Solids (TDS) under the Region 6 SWAMP program between 2001 and 2005. Concentrations of TDS in 12 quarterly samples ranged from 101 to 196 mg/L. The annual average objective was violated in 5 of 5 years. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The site-specific objective from Lahontan Basin Plan Table 3-21 includes an annual average of 56 mg/L and a 90th percentile value of 72 mg/L. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled: "Sheep Creek below Lake Arrowhead Scout Camp near Lake Arrowhead." |
Temporal Representation: | Twelve quarterly samples (2 to 4 per year) were collected between 2001 and 2005. |
Environmental Conditions: | Sheep Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Sheep Creek is designated for both the Cold Freshwater Habitat and the Warm Freshwater Habitat beneficial uses. |
QAPP Information: | Data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): | |
| |
LOE ID: | 5304 |
Pollutant: | Total Dissolved Solids |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total Dissolved |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 12 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled Total Dissolved Solids (TDS) under the Region 6 SWAMP program between 2001 and 2005. TDS concentrations in 12 quarterly samples ranged from 101 to 196 mg/L. The MCL was not violated. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | California Maximum Contaminant Levels (MCLs) apply to ambient waters under the Lahontan Basin Plan's "Chemical Constituents" objective. The MCL for Total Dissolved Solids is 500 mg/L. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled: "Sheep Creek below Lake Arrowhead Scout Camp near Lake Arrowhead." |
Temporal Representation: | Twelve quarterly samples (2 to 4 per year) were collected between 2001 and 2005. |
Environmental Conditions: | Sheep Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Sheep Creek is designated for both the Cold Freshwater Habitat and the Warm Freshwater Habitat beneficial uses. |
QAPP Information: | Data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 16112 |
LOE ID: | 8047 |
Pollutant: | Total Kjeldahl Nitrogen (TKN) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 12 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled Sheep Creek under the Region 6 SWAMP program between 2001 and 2005. One of 12 quarterly sampling results for TKN was below the detection level and 4 samples were estimated values. Concentrations of TKN in the remaining samples ranged from 0.06 to 0.46 mg/L. No biological data are available for assessment of compliance with the objective for biostimulatory substances. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | There is no site-specific numeric objective for Total Kjeldahl Nitrogen (TKN) for Sheep Creek. The Lahontan Basin Plan's narrative objective for biostimulatory substances states:
"Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect the water for beneficial uses." |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled: "Sheep Creek below Lake Arrowhead Scout Camp near Lake Arrowhead." |
Temporal Representation: | Twelve quarterly samples (2 to 4 per year) were collected between 2001 and 2005. |
Environmental Conditions: | Sheep Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Sheep Creek is designated for both the Cold Freshwater Habitat and the Warm Freshwater Habitat beneficial uses. |
QAPP Information: | Data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 16113 |
LOE ID: | 8063 |
Pollutant: | Total Nitrogen as N |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Total |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 5 |
Number of Exceedances: | 1 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled Sheep Creek under the Region 6 SWAMP program between 2001 and 2005. Twelve quarterly samples each were collected for total Kjeldahl nitrogen and nitrite plus nitrate. Total nitrogen was calculated from these samples. Due to estimated and below detection level values in the component samples, 6 of 12 total nitrogen values were estimates. The remainder of the calculated total nitrogen concentrations ranged from 0.196 to 0.528 mg/L. Three of five annual averages (calculated from 2 to 3 total nitrogen values) were estimates. One of five annual averages was in violation of the objective. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The site-specific objective for Deep Creek Station 5, from Lahontan Basin Plan Table 3-21, applies under the tributary rule. The objective includes an annual average total nitrogen concentration of 0.3 mg/L, and a 90th percentile value of 0.7 mg/L. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled: "Sheep Creek below Lake Arrowhead Scout Camp near Lake Arrowhead." |
Temporal Representation: | Twelve quarterly samples each (2 to 4 per year) were collected for total Kjeldahl nitrogen and nitrite plus nitrate. |
Environmental Conditions: | Sheep Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Sheep Creek is designated for both the Cold Freshwater Habitat and the Warm Freshwater Habitat beneficial uses. |
QAPP Information: | Data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 16114 |
LOE ID: | 5306 |
Pollutant: | pH |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 11 |
Number of Exceedances: | 0 |
Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) |
Data Used to Assess Water Quality: | The U.S. Geological Survey sampled pH under the Region 6 SWAMP program between 2001 and 2005. Eleven pH measurements ranged from 7 to 7.5 units. There were too few samples to define the normal pH regime or to allow detection of change. |
Data Reference: | 2007. SWAMP Data for the Mojave River Watershed |
Water Quality Objective/Criterion: | The Lahontan Basin Plan's objective for pH states: "In fresh waters with designated beneficial uses of COLD or WARM, changes in normal ambient pH levels shall not exceed 0.5 pH units. For all other waters of the region, the pH shall not be depressed below 6.5 nor raised above 8.5 units.
The Regional Board recognizes that some waters of the Region may have natural pH levels outside of the 6.5 to 8.5 range. Compliance with the pH objective for these waters will be determined on a case-by-case basis." |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled: "Sheep Creek below Lake Arrowhead Scout Camp near Lake Arrowhead." |
Temporal Representation: | Eleven field pH measurements were taken approximately quarterly between 2001 and 2005. |
Environmental Conditions: | Sheep Creek is a tributary of Deep Creek, the largest tributary of the Mojave River, located in San Bernardino National Forest. Sheep Creek is designated for both the Cold Freshwater Habitat and the Warm Freshwater Habitat beneficial uses. |
QAPP Information: | Data meet the quality assurance requirements of the SWAMP QAPP. |
QAPP Information Reference(s): |