Water Body Name: | Trout Creek (above Hwy 50) |
Water Body ID: | CAR6341003120000220171341 |
Water Body Type: | River & Stream |
Lines of Evidence (LOEs) for Decision ID 6434 |
LOE ID: | 27162 |
Pollutant: | Fecal Coliform |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | None |
Beneficial Use: | Water Contact Recreation |
Number of Samples: | 75 |
Number of Exceedances: | 17 |
Data and Information Type: | Water column surveys (e.g. fecal coliform) |
Data Used to Assess Water Quality: | This assessment uses data collected and analyzed by Lahontan RWQCB staff in 2000, 2001, 2002 and 2008. It . focuses on violations of the 20/100 mL limit. Data were evaluated as 30-day normalized log means. There were 75 log mean datapoints, with 17 datapoints in violation of the 20/100 mL limit. |
Data Reference: | 2009. Determination of Fecal Coliform Violations of Lahontan Basin Plan Water Quality Objectives: Data Reduction Procedure |
2008 Nonpoint Source (NPS) Fecal Coliform Data (colonies per 100 ml) for Trout Creek above Highway 50 | |
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: | Data were collected at one station at Highway 50. |
Temporal Representation: | The data used were collected in 2000, 2001, 2002 and 2008. |
Environmental Conditions: | Trout Creek joins the Upper Truckee River near the south shore of Lake Tahoe. |
QAPP Information: | The data were collected and analyzed using the Lahontan RWQCB's quality assurance protocols. |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 6432 |
LOE ID: | 4643 |
Pollutant: | Iron |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Not Recorded |
Beneficial Use: | Municipal & Domestic Supply |
Number of Samples: | 0 |
Number of Exceedances: | 0 |
Data and Information Type: | Not Specified |
Data Used to Assess Water Quality: | Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006. |
Data Reference: | Placeholder reference pre-2006 303(d) |
Water Quality Objective/Criterion: | Unspecified |
Objective/Criterion Reference: | Placeholder reference pre-2006 303(d) |
Evaluation Guideline: | Unspecified |
Guideline Reference: | Placeholder reference pre-2006 303(d) |
Spatial Representation: | Unspecified |
Temporal Representation: | Unspecified |
Environmental Conditions: | Unspecified |
QAPP Information: | Unspecified |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 6433 |
LOE ID: | 4644 |
Pollutant: | Nitrogen |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Not Recorded |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 0 |
Number of Exceedances: | 0 |
Data and Information Type: | Not Specified |
Data Used to Assess Water Quality: | Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006. |
Data Reference: | Placeholder reference pre-2006 303(d) |
Water Quality Objective/Criterion: | Unspecified |
Objective/Criterion Reference: | Placeholder reference pre-2006 303(d) |
Evaluation Guideline: | Unspecified |
Guideline Reference: | Placeholder reference pre-2006 303(d) |
Spatial Representation: | Unspecified |
Temporal Representation: | Unspecified |
Environmental Conditions: | Unspecified |
QAPP Information: | Unspecified |
QAPP Information Reference(s): |
Lines of Evidence (LOEs) for Decision ID 6435 |
LOE ID: | 4646 |
Pollutant: | Phosphorus |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Not Recorded |
Beneficial Use: | Cold Freshwater Habitat |
Number of Samples: | 0 |
Number of Exceedances: | 0 |
Data and Information Type: | Not Specified |
Data Used to Assess Water Quality: | Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006. |
Data Reference: | Placeholder reference pre-2006 303(d) |
Water Quality Objective/Criterion: | Unspecified |
Objective/Criterion Reference: | Placeholder reference pre-2006 303(d) |
Evaluation Guideline: | Unspecified |
Guideline Reference: | Placeholder reference pre-2006 303(d) |
Spatial Representation: | Unspecified |
Temporal Representation: | Unspecified |
Environmental Conditions: | Unspecified |
QAPP Information: | Unspecified |
QAPP Information Reference(s): |