SLR-040

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Previously referred to as SLR.4

San Luis Rey River near Mission Ave where Hwy 76 crosses SLR

2011 Data

Legend

Graphs include Water Quality Objectives or thresholds(shown by bold red lines) where applicable.


ND- Not Detected (Value below minimum detection limits, results presented at minimum detection limit)

ns- Not Sampled

n/a- Not Available

MPN- Most Probable Number

BIN- Biological Index Number

>limit- Exceeds maximum measurable range

> Greater than

< Less than


References:

Water Quality Control Plan for the San Diego Basin, California Regional Water Quality Control Board, San Diego Region

US EPA criteria for lightly/moderately used freshwater areas were published in:

The Federal Register: Vol. 51, No. 45/Friday, March 7,1986/8012-8016

For all other procedures: http://sdwatersheds.org/wiki/Volunteer_Training


Water Quality Objectives for Chemical, Nutrient, Bacteria

and Toxicity Parameters by San Diego Coastkeeper


These are the limits used by regulatory agencies to show water quality impairment.

Water Quality Indicators

pH: < 6.5 or > 8.5

Dissolved Oxygen: < 5.0 mg/L

Total Phosphorous: PO4-P > 0.1 mg/L

Nitrate: NO3-N > 1 mg/L or N:P ratio > 10:1

Ammonia: NH3-N > 0.025 mg/L

E. coli: > 406 per 100 mL

Enterococci: > 108 per 100 mL

Toxicity: BIN >= 4


Graphs Updated: January 18, 2011

2011_slr_040_wt.PNG 2011_slr_040_at.PNG
2011_slr_040_ph.png 2011_slr_040_cond.png
2011_slr_040_do.png 2011_slr_040_entro.PNG
2011_slr_040_tcoli.png 2011_slr_040_ecoli.png
2011_slr_040_ammo.png 2011_slr_040_np.png
2011_slr_040_tox.PNG

2010 Data

Legend

Graphs include Water Quality Objectives or thresholds(shown by bold red lines) where applicable.


ND- Not Detected (Value below minimum detection limits, results presented at minimum detection limit)

ns- Not Sampled

n/a- Not Available

MPN- Most Probable Number

BIN- Biological Index Number

>limit- Exceeds maximum measurable range

> Greater than

< Less than


References:

Water Quality Control Plan for the San Diego Basin, California Regional Water Quality Control Board, San Diego Region

US EPA criteria for lightly/moderately used freshwater areas were published in:

The Federal Register: Vol. 51, No. 45/Friday, March 7,1986/8012-8016

For all other procedures: http://sdwatersheds.org/wiki/Volunteer_Training


Water Quality Objectives for Chemical, Nutrient, Bacteria

and Toxicity Parameters by San Diego Coastkeeper


These are the limits used by regulatory agencies to show water quality impairment.

Water Quality Indicators

pH: < 6.5 or > 8.5

Dissolved Oxygen: < 5.0 mg/L

Total Phosphorous: PO4-P > 0.1 mg/L

Nitrate: NO3-N > 1 mg/L or N:P ratio > 10:1

Ammonia: NH3-N > 0.025 mg/L

E. coli: > 406 per 100 mL

Enterococci: > 108 per 100 mL

Toxicity: BIN >= 4


Graphs Updated: January 18, 2011

2010_slr_040_wt.PNG 2010_slr_040_at.PNG
2010_slr_040_ph.PNG 2010_slr_040_cond.PNG
2010_slr_040_do.PNG 2010_slr_040_ent.PNG
2010_slr_040_tc.PNG 2010_slr_040_ecol.PNG
2010_slr_040_ammo.PNG 2010_slr_040_np.PNG
2010_slr_040_tox.PNG

2009 Data

image:Npslr4.PNG image:Phslr4.PNG‎
image:Conslr4.PNG‎ image:Doslr4.PNG
image:Wtslr4.PNG image:Atslr4.PNG‎
image:Ecolislr4.PNG‎ image:Tcolislr4.PNG
image:Enteroslr4.PNG‎

Legend

ns- Not Sampled

n/a- Not Available

MPN- Most Probable Number

>limit- Exceeds maximum measurable range

> Greater than

< Less than

Graphs include Water Quality Objectives or thresholds where applicable. These are the limits used by regulatory agencies to show water quality impairment.

References:

Water Quality Control Plan for the San Diego Basin, California Regional Water Quality Control Board, San Diego Region

US EPA criteria for lightly/ moderately used freshwater areas were published in the Federal Register, Vol. 51, No. 45/Friday, March 7,1986/8012-8016

Data From Previous Years

2008

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