Water Body Name: | Eagle Creek (Modoc County) |
Water Body ID: | CAR6411001020080811010319 |
Water Body Type: | River & Stream |
Lines of Evidence (LOEs) for Decision ID 13749 |
LOE ID: | 25771 |
Pollutant: | Dissolved oxygen saturation |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
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. Bureau of Land Management sampled this station on September 11, 2002. The percent saturation of dissolved oxygen in one sample was 61 percent.. |
Data Reference: | Water quality data for surface waters on U.S Bureau of Land Management lands in Lassen and Modoc Counties. |
Water Quality Objective/Criterion: | The regionwide narrative objective in the Lahontan Basin Plan states: "The dissolved oxygen concentration, as percent saturation, shall not be depressed by more than 10 percent, nor shall the minimum dissolved oxygen concentration be less than 80 percent of 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. |
Temporal Representation: | One sample was taken on September 11, 2002. |
Environmental Conditions: | Eagle Creek is a tributary to Lower Alkali Lake in the Surprise Valley Hydrologic Unit, located north of Emerson Creek. |
QAPP Information: | No quality assurance information was submitted with the data. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 13756 |
LOE ID: | 26035 |
Pollutant: | Fecal Coliform |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | Water column surveys (e.g. fecal coliform) |
Data Used to Assess Water Quality: | The U.S. Bureau of Land Management sampled this station on September 11, 2002. The reported fecal coliform count in one sample was zero (0) colonies per 100 mL.. |
Data Reference: | Water quality data for surface waters on U.S Bureau of Land Management lands in Lassen and Modoc Counties. |
Water Quality Objective/Criterion: | The Lahontan Basin Plan's objective for coliform bacteria states:
"Waters shall not contain concentrations of coliform organisms attributable to anthropogenic sources, including human and livestock waste. The fecal coliform concentration during any 30-day period shall not exceed a log mean of 20/100 ml, nor shall more than 10 percent of all samples collected during any 30-day period exceed 40/100 ml. The log mean shall ideally be based on a minimum of not less than five samples collected a evenly spaced as practicable during any 30-day period. However, a log mean concentration exceeding 20/100 ml for any 30-day period shall indicate violation of this objective even if fewer than five samples were collected." |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled. |
Temporal Representation: | One sample was taken on September 11, 2002. |
Environmental Conditions: | Eagle Creek is a tributary to Lower Alkali Lake in the Surprise Valley Hydrologic Unit, located north of Emerson Creek. |
QAPP Information: | No quality assurance information was submitted with the data. |
QAPP Information Reference(s): | |
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LOE ID: | 26036 |
Pollutant: | Fecal Coliform |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 1 |
Number of Exceedances: | 0 |
Data and Information Type: | Water column surveys (e.g. fecal coliform) |
Data Used to Assess Water Quality: | The U.S. Bureau of Land Management sampled this station on September 11, 2002. The reported fecal coliform count in one sample was zero (0) colonies per 100 mL.. |
Data Reference: | Water quality data for surface waters on U.S Bureau of Land Management lands in Lassen and Modoc Counties. |
Water Quality Objective/Criterion: | The Lahontan Basin Plan's objective for coliform bacteria states:
"Waters shall not contain concentrations of coliform organisms attributable to anthropogenic sources, including human and livestock waste. The fecal coliform concentration during any 30-day period shall not exceed a log mean of 20/100 ml, nor shall more than 10 percent of all samples collected during any 30-day period exceed 40/100 ml. The log mean shall ideally be based on a minimum of not less than five samples collected a evenly spaced as practicable during any 30-day period. However, a log mean concentration exceeding 20/100 ml for any 30-day period shall indicate violation of this objective even if fewer than five samples were collected." |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled. |
Temporal Representation: | One sample was taken on September 11, 2002. |
Environmental Conditions: | Eagle Creek is a tributary to Lower Alkali Lake in the Surprise Valley Hydrologic Unit, located north of Emerson Creek. |
QAPP Information: | No quality assurance information was submitted with the data. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 13757 |
LOE ID: | 26031 |
Pollutant: | Nitrate |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Municipal & Domestic Supply |
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. Bureau of Land Management sampled this station on September 11, 2002. The NO3-N concentration in the single sample was 0.64 mg/L The MCL was not exceeded.. |
Data Reference: | Water quality data for surface waters on U.S Bureau of Land Management lands in Lassen and Modoc Counties. |
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 to 10 mg/L expressed "as N." |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled. |
Temporal Representation: | One sample was taken on September 11, 2002. |
Environmental Conditions: | Eagle Creek is a tributary to Lower Alkali Lake in the Surprise Valley Hydrologic Unit, located north of Emerson Creek. |
QAPP Information: | No quality assurance information was submitted with the data. |
QAPP Information Reference(s): | |
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LOE ID: | 26030 |
Pollutant: | Nitrate |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
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. Bureau of Land Management sampled this station on September 11, 2002. The NO3-N concentration in the single sample was 0.64 mg/L The "annual average" based on this sample exceeds the objective. |
Data Reference: | Water quality data for surface waters on U.S Bureau of Land Management lands in Lassen and Modoc Counties. |
Water Quality Objective/Criterion: | The site-specific water quality objective, from Lahontan Basin Plan Table 3-7 is an annual average total nitrogen concentration of 0.1 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. |
Temporal Representation: | One sample was taken on September 11, 2002. |
Environmental Conditions: | Eagle Creek is a tributary to Lower Alkali Lake in the Surprise Valley Hydrologic Unit, located north of Emerson Creek. |
QAPP Information: | No quality assurance information was submitted with the data. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 13760 |
LOE ID: | 25770 |
Pollutant: | Oxygen, Dissolved |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 1 |
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. Bureau of Land Management sampled this station on September 11, 2002. The concentration of dissolved oxygen in one sample was 6.52 mg/L.. |
Data Reference: | Water quality data for surface waters on U.S Bureau of Land Management lands in Lassen and Modoc Counties. |
Water Quality Objective/Criterion: | The applicable water quality objective is a one-day minimum of 8 mg/L (Basin Plan Table 3-6). |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled. |
Temporal Representation: | One sample was taken on September 11, 2002. |
Environmental Conditions: | Eagle Creek is a tributary to Lower Alkali Lake in the Surprise Valley Hydrologic Unit, located north of Emerson Creek. |
QAPP Information: | No quality assurance information was submitted with the data. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 13763 |
LOE ID: | 26032 |
Pollutant: | Phosphate |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
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. Bureau of Land Management sampled this station on September 11, 2002. The PO4-P concentration in the single sample was 0.32 mg/L |
Data Reference: | Water quality data for surface waters on U.S Bureau of Land Management lands in Lassen and Modoc Counties. |
Water Quality Objective/Criterion: | The Lahontan Basin Plan does not include site-specific objectives for this water body. The regionwide 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. |
Temporal Representation: | One sample was taken on September 11, 2002. |
Environmental Conditions: | Eagle Creek is a tributary to Lower Alkali Lake in the Surprise Valley Hydrologic Unit, located north of Emerson Creek. |
QAPP Information: | No quality assurance information was submitted with the data. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 13761 |
LOE ID: | 25768 |
Pollutant: | Specific Conductance |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
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. Bureau of Land Management sampled this station on September 11, 2002. Specific conductance in one sample was 116 uS/cm. The MCL was not exceeded. |
Data Reference: | Water quality data for surface waters on U.S Bureau of Land Management lands in Lassen and Modoc Counties. |
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. |
Temporal Representation: | One sample was taken on September 11, 2002. |
Environmental Conditions: | Eagle Creek is a tributary to Lower Alkali Lake in the Surprise Valley Hydrologic Unit, located north of Emerson Creek. |
QAPP Information: | No quality assurance information was submitted with the data. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 13766 |
LOE ID: | 25772 |
Pollutant: | Temperature, water |
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. Bureau of Land Management sampled this station on September 11, 2002. The temperature in one sample was 12.22 degrees Celsius. |
Data Reference: | Water quality data for surface waters on U.S Bureau of Land Management lands in Lassen and Modoc Counties. |
Water Quality Objective/Criterion: | The relevant sections of the Lahontan Basin Plan's temperature objective are as follows: "The natural receiving water temperature of al l waters shall not be altered unless it can be demonstrated to the satisfaction fo 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. |
Temporal Representation: | One sample was taken on September 11, 2002. |
Environmental Conditions: | Eagle Creek is a tributary to Lower Alkali Lake in the Surprise Valley Hydrologic Unit, located north of Emerson Creek. |
QAPP Information: | No quality assurance information was submitted with the data. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 13768 |
LOE ID: | 26033 |
Pollutant: | Turbidity |
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. Bureau of Land Management sampled this station on September 11, 2002. The turbidity of the single sample was 1.97 NTU. |
Data Reference: | Water quality data for surface waters on U.S Bureau of Land Management lands in Lassen and Modoc Counties. |
Water Quality Objective/Criterion: | The Lahontan Basin Plan's regionwide turbidity objective states: "Waters shall be free of changes in turbidity that cause nuisance or adversely affect the water for beneficial uses. Increases in turbidity shall not exceed natural levels by more than 10 percent." |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled. |
Temporal Representation: | One sample was taken on September 11, 2002. |
Environmental Conditions: | Eagle Creek is a tributary to Lower Alkali Lake in the Surprise Valley Hydrologic Unit, located north of Emerson Creek. |
QAPP Information: | No quality assurance information was submitted with the data. |
QAPP Information Reference(s): | |
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LOE ID: | 26034 |
Pollutant: | Turbidity |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Municipal & Domestic Supply |
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. Bureau of Land Management sampled this station on September 11, 2002. The turbidity of the single sample was 1.97 NTU. The MCL was not exceeded. |
Data Reference: | Water quality data for surface waters on U.S Bureau of Land Management lands in Lassen and Modoc Counties. |
Water Quality Objective/Criterion: | California Maximum Contaminant Levels apply to ambient waters under the Lahontan Basin Plan's "Chemical Constituents" objective. The MCL for turbidity is 5 NTU. |
Objective/Criterion Reference: | 2007. Water Quality Control Plan for the Lahontan Region (as amended). |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | One station was sampled. |
Temporal Representation: | One sample was taken on September 11, 2002. |
Environmental Conditions: | Eagle Creek is a tributary to Lower Alkali Lake in the Surprise Valley Hydrologic Unit, located north of Emerson Creek. |
QAPP Information: | No quality assurance information was submitted with the data. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 13769 |
LOE ID: | 25769 |
Pollutant: | pH |
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. Bureau of Land Management sampled this station on September 11, 2002. The pH in one sample was 7 units. |
Data Reference: | Water quality data for surface waters on U.S Bureau of Land Management lands in Lassen and Modoc Counties. |
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. |
Temporal Representation: | One sample was taken on September 11, 2002. |
Environmental Conditions: | Eagle Creek is a tributary to Lower Alkali Lake in the Surprise Valley Hydrologic Unit, located north of Emerson Creek. |
QAPP Information: | No quality assurance information was submitted with the data. |
QAPP Information Reference(s): |