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California Department of Fish and Game

Fish Hatcheries And Preserves, Mammoth Lakes, California. NPDES permit CA0102776 expired Apr 30, 2026; its limits still apply. Last 12 months: over a limit 55 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 32 days after each period: outfall 001 form A quarterly (11 values), outfall 001 form Q quarterly (17 values), outfall 002 form A quarterly (11 values), outfall 002 form Q quarterly (17 values), outfall 003 form A quarterly (11 values), outfall 003 form Q quarterly (17 values), and 28 more forms
Last report on file
June 2026
Oct 2024 – Sep 2025
79 values over a limit, 0 required values missing, 24 of 128 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

All 55 values over a limit
Period endingOutfallParameterReportedLimitOver by
October 2025001pH, maximum value7.34 SU≤ .5 SU—
October 2025001pH, value7.34 SU≤ .5 SU—
October 2025002pH, maximum value7.37 SU≤ .5 SU—
October 2025002pH, value7.37 SU≤ .5 SU—
October 2025003pH, maximum value7.37 SU≤ .5 SU—
October 2025003pH, value7.37 SU≤ .5 SU—
October 2025004pH, maximum value6.73 SU≤ .5 SU—
October 2025004pH, value6.73 SU≤ .5 SU—
November 2025003pH, maximum value7.93 SU≤ .5 SU—
November 2025003pH, value7.93 SU≤ .5 SU—
December 2025001Nitrogen, total [as N], annual average.65 mg/L≤ .3 mg/L117%
December 2025002Nitrogen, total [as N], annual average.5 mg/L≤ .3 mg/L67%
December 2025002pH, maximum value8.07 SU≤ .5 SU—
December 2025002pH, value8.07 SU≤ .5 SU—
December 2025003Nitrogen, total [as N], annual average.41 mg/L≤ .3 mg/L37%
December 2025004Nitrogen, total [as N], annual average.57 mg/L≤ .3 mg/L90%
January 2026001pH, maximum value7.97 SU≤ .5 SU—
January 2026001pH, value7.97 SU≤ .5 SU—
January 2026003pH, maximum value7.95 SU≤ .5 SU—
January 2026003pH, value7.95 SU≤ .5 SU—
January 2026004pH, maximum value8.01 SU≤ .5 SU—
January 2026004pH, value8.01 SU≤ .5 SU—
February 2026002pH, maximum value7.93 SU≤ .5 SU—
February 2026002pH, value7.93 SU≤ .5 SU—
February 2026003pH, maximum value7.64 SU≤ .5 SU—
February 2026003pH, value7.64 SU≤ .5 SU—
March 2026001pH, maximum value7.85 SU≤ .5 SU—
March 2026001pH, value7.85 SU≤ .5 SU—
March 2026004pH, maximum value7.65 SU≤ .5 SU—
March 2026004pH, value7.65 SU≤ .5 SU—
April 2026001pH, maximum value8.49 SU≤ .5 SU—
April 2026001pH, value8.49 SU≤ .5 SU—
April 2026002pH, maximum value7.89 SU≤ .5 SU—
April 2026002pH, value7.89 SU≤ .5 SU—
April 2026003pH, maximum value7.72 SU≤ .5 SU—
April 2026003pH, value7.72 SU≤ .5 SU—
April 2026004pH, maximum value7.82 SU≤ .5 SU—
April 2026004pH, value7.82 SU≤ .5 SU—
May 2026001pH, maximum value7.79 SU≤ .5 SU—
May 2026001pH, value7.79 SU≤ .5 SU—
May 2026002pH, maximum value7.76 SU≤ .5 SU—
May 2026002pH, value7.76 SU≤ .5 SU—
May 2026003pH, maximum value8.04 SU≤ .5 SU—
May 2026003pH, value8.04 SU≤ .5 SU—
May 2026004pH, maximum value7.84 SU≤ .5 SU—
May 2026004pH, value7.84 SU≤ .5 SU—
June 2026001Solids, settleable, monthly average6.54 mL/L≤ .1 mL/L6440%
June 2026001pH, maximum value7.99 SU≤ .5 SU—
June 2026001pH, value7.99 SU≤ .5 SU—
June 2026002pH, maximum value7.98 SU≤ .5 SU—
June 2026002pH, value7.98 SU≤ .5 SU—
June 2026003pH, maximum value7.93 SU≤ .5 SU—
June 2026003pH, value7.93 SU≤ .5 SU—
June 2026004pH, maximum value8.09 SU≤ .5 SU—
June 2026004pH, value8.09 SU≤ .5 SU—

Limits in force (253)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitinstantaneous maximumreport only (deg F)all year001
Turbiditydaily maximumreport only (NTU)all year001
Specific conductancedaily maximumreport only (umho/cm)all year001
Specific conductancedaily maximumreport only (umho/cm)all year001
Hydrogen peroxidedaily maximumreport only (mg/L)all year001
Oxygen, dissolved [DO]instantaneous minimumreport only (mg/L)all year001
pHminimum≥ 6.5 SUall year001
pHvalue≤ .5 SUall year001
pHmaximum≤ 8.5 SUall year001
pHmaximum value≤ .5 SUall year001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Solids, total suspendedinstantaneous maximumreport only (mg/L)all year001
Solids, Total Suspended, Net Valuemonthly average≤ 6 mg/Lall year001
Solids, Total Suspended, Net Valueinstantaneous maximum≤ 6 mg/Lall year001
Solids, settleablemonthly average≤ .1 mL/Lall year001
Nitrogen, total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, total [as N]annual average≤ .3 mg/Lall year001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year001
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year001
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year001
Chloride [as Cl]daily maximumreport only (mg/L)all year001
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year001
Fluoride, total [as F]daily maximumreport only (mg/L)all year001
Boron, total recoverabledaily maximumreport only (mg/L)all year001
Manganese, total recoverabledaily maximumreport only (ug/L)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Potassium permanganatemonthly average≤ .098 mg/Lall year001
Potassium permanganatedaily maximum≤ .197 mg/Lall year001
Chloramine-Tmonthly averagereport only (mg/L)all year001
Chloramine-Tdaily maximumreport only (mg/L)all year001
PVP-Iodinedaily maximumreport only (mg/L)all year001
Solids, total dissolveddaily maximumreport only (mg/L)all year001
Formaldehydemonthly average≤ .65 mg/Lall year001
Formaldehydedaily maximum≤ 1.3 mg/Lall year001
Temperature, water deg. fahrenheitinstantaneous maximumreport only (deg F)all year002
Turbiditydaily maximumreport only (NTU)all year002
Specific conductancedaily maximumreport only (umho/cm)all year002
Specific conductancedaily maximumreport only (umho/cm)all year002
Hydrogen peroxidedaily maximumreport only (mg/L)all year002
Oxygen, dissolved [DO]instantaneous minimumreport only (mg/L)all year002
pHminimum≥ 6.5 SUall year002
pHvalue≤ .5 SUall year002
pHmaximum≤ 8.5 SUall year002
pHmaximum value≤ .5 SUall year002
Solids, total suspendedmonthly averagereport only (mg/L)all year002
Solids, total suspendedinstantaneous maximumreport only (mg/L)all year002
Solids, Total Suspended, Net Valuemonthly average≤ 6 mg/Lall year002
Solids, Total Suspended, Net Valueinstantaneous maximum≤ 6 mg/Lall year002
Solids, settleablemonthly average≤ .1 mL/Lall year002
Nitrogen, total [as N]annual average≤ .3 mg/Lall year002
Nitrogen, total [as N]daily maximumreport only (mg/L)all year002
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year002
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year002
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year002
Chloride [as Cl]daily maximumreport only (mg/L)all year002
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year002
Fluoride, total [as F]daily maximumreport only (mg/L)all year002
Arsenic, total recoverabledaily maximumreport only (ug/L)all year002
Selenium, total recoverabledaily maximumreport only (ug/L)all year002
Thallium, total recoverabledaily maximumreport only (ug/L)all year002
Beryllium, total recoverable [as Be]daily maximumreport only (ug/L)all year002
Boron, total recoverabledaily maximumreport only (mg/L)all year002
Chromium, hexavalent [as Cr]daily maximumreport only (ug/L)all year002
Chromium, trivalent [as Cr]daily maximumreport only (ug/L)all year002
Nickel, total recoverabledaily maximumreport only (ug/L)all year002
Silver total recoverabledaily maximumreport only (ug/L)all year002
Zinc, total recoverabledaily maximumreport only (ug/L)all year002
Cadmium, total recoverabledaily maximumreport only (ug/L)all year002
Lead, total recoverabledaily maximumreport only (ug/L)all year002
Copper, total recoverabledaily maximumreport only (ug/L)all year002
Antimony, total recoverabledaily maximumreport only (ug/L)all year002
Manganese, total recoverabledaily maximumreport only (ug/L)all year002
Manganese, total recoverabledaily maximumreport only (ug/L)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Potassium permanganatemonthly average≤ .098 mg/Lall year002
Potassium permanganatedaily maximum≤ .197 mg/Lall year002
Chloramine-Tmonthly averagereport only (mg/L)all year002
Chloramine-Tdaily maximumreport only (mg/L)all year002
PVP-Iodinedaily maximumreport only (mg/L)all year002
Solids, total dissolveddaily maximumreport only (mg/L)all year002
Formaldehydemonthly average≤ .65 mg/Lall year002
Formaldehydedaily maximum≤ 1.3 mg/Lall year002
Mercury, total recoverabledaily maximumreport only (ug/L)all year002
Temperature, water deg. fahrenheitinstantaneous maximumreport only (deg F)all year003
Turbiditydaily maximumreport only (NTU)all year003
Specific conductancedaily maximumreport only (umho/cm)all year003
Specific conductancedaily maximumreport only (umho/cm)all year003
Hydrogen peroxidedaily maximumreport only (mg/L)all year003
Oxygen, dissolved [DO]instantaneous minimumreport only (mg/L)all year003
pHminimum≥ 6.5 SUall year003
pHvalue≤ .5 SUall year003
pHmaximum≤ 8.5 SUall year003
pHmaximum value≤ .5 SUall year003
Solids, total suspendedmonthly averagereport only (mg/L)all year003
Solids, total suspendedinstantaneous maximumreport only (mg/L)all year003
Solids, Total Suspended, Net Valuemonthly average≤ 6 mg/Lall year003
Solids, Total Suspended, Net Valueinstantaneous maximum≤ 6 mg/Lall year003
Solids, settleablemonthly average≤ .1 mL/Lall year003
Nitrogen, total [as N]daily maximumreport only (mg/L)all year003
Nitrogen, total [as N]annual average≤ .3 mg/Lall year003
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year003
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year003
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year003
Chloride [as Cl]daily maximumreport only (mg/L)all year003
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year003
Fluoride, total [as F]daily maximumreport only (mg/L)all year003
Arsenic, total recoverabledaily maximumreport only (ug/L)all year003
Selenium, total recoverabledaily maximumreport only (ug/L)all year003
Thallium, total recoverabledaily maximumreport only (ug/L)all year003
Beryllium, total recoverable [as Be]daily maximumreport only (ug/L)all year003
Boron, total recoverabledaily maximumreport only (mg/L)all year003
Chromium, hexavalent [as Cr]daily maximumreport only (ug/L)all year003
Chromium, trivalent [as Cr]daily maximumreport only (ug/L)all year003
Nickel, total recoverabledaily maximumreport only (ug/L)all year003
Silver total recoverabledaily maximumreport only (ug/L)all year003
Zinc, total recoverabledaily maximumreport only (ug/L)all year003
Cadmium, total recoverabledaily maximumreport only (ug/L)all year003
Lead, total recoverabledaily maximumreport only (ug/L)all year003
Copper, total recoverabledaily maximumreport only (ug/L)all year003
Antimony, total recoverabledaily maximumreport only (ug/L)all year003
Manganese, total recoverabledaily maximumreport only (ug/L)all year003
Manganese, total recoverabledaily maximumreport only (ug/L)all year003
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year003
Potassium permanganatemonthly average≤ .098 mg/Lall year003
Potassium permanganatedaily maximum≤ .197 mg/Lall year003
Chloramine-Tmonthly averagereport only (mg/L)all year003
Chloramine-Tdaily maximumreport only (mg/L)all year003
PVP-Iodinedaily maximumreport only (mg/L)all year003
Solids, total dissolveddaily maximumreport only (mg/L)all year003
Formaldehydemonthly average≤ .65 mg/Lall year003
Formaldehydedaily maximum≤ 1.3 mg/Lall year003
Mercury, total recoverabledaily maximumreport only (ug/L)all year003
Temperature, water deg. fahrenheitinstantaneous maximumreport only (deg F)all year004
Turbiditydaily maximumreport only (NTU)all year004
Specific conductancedaily maximumreport only (umho/cm)all year004
Specific conductancedaily maximumreport only (umho/cm)all year004
Hydrogen peroxidedaily maximumreport only (mg/L)all year004
Oxygen, dissolved [DO]instantaneous minimumreport only (mg/L)all year004
pHminimum≥ 6.5 SUall year004
pHvalue≤ .5 SUall year004
pHmaximum≤ 8.5 SUall year004
pHmaximum value≤ .5 SUall year004
Solids, total suspendedmonthly averagereport only (mg/L)all year004
Solids, total suspendedinstantaneous maximumreport only (mg/L)all year004
Solids, Total Suspended, Net Valuemonthly average≤ 6 mg/Lall year004
Solids, Total Suspended, Net Valueinstantaneous maximum≤ 6 mg/Lall year004
Solids, settleablemonthly average≤ .1 mL/Lall year004
Nitrogen, total [as N]daily maximumreport only (mg/L)all year004
Nitrogen, total [as N]annual average≤ .3 mg/Lall year004
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year004
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year004
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year004
Chloride [as Cl]daily maximumreport only (mg/L)all year004
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year004
Fluoride, total [as F]daily maximumreport only (mg/L)all year004
Arsenic, total recoverabledaily maximumreport only (ug/L)all year004
Selenium, total recoverabledaily maximumreport only (ug/L)all year004
Thallium, total recoverabledaily maximumreport only (ug/L)all year004
Beryllium, total recoverable [as Be]daily maximumreport only (ug/L)all year004
Boron, total recoverabledaily maximumreport only (mg/L)all year004
Chromium, hexavalent [as Cr]daily maximumreport only (ug/L)all year004
Chromium, trivalent [as Cr]daily maximumreport only (ug/L)all year004
Nickel, total recoverabledaily maximumreport only (ug/L)all year004
Silver total recoverabledaily maximumreport only (ug/L)all year004
Zinc, total recoverabledaily maximumreport only (ug/L)all year004
Cadmium, total recoverabledaily maximumreport only (ug/L)all year004
Lead, total recoverabledaily maximumreport only (ug/L)all year004
Copper, total recoverabledaily maximumreport only (ug/L)all year004
Antimony, total recoverabledaily maximumreport only (ug/L)all year004
Manganese, total recoverabledaily maximumreport only (ug/L)all year004
Manganese, total recoverabledaily maximumreport only (ug/L)all year004
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year004
Potassium permanganatemonthly average≤ .098 mg/Lall year004
Potassium permanganatedaily maximum≤ .197 mg/Lall year004
Chloramine-Tmonthly averagereport only (mg/L)all year004
Chloramine-Tdaily maximumreport only (mg/L)all year004
PVP-Iodinedaily maximumreport only (mg/L)all year004
Solids, total dissolveddaily maximumreport only (mg/L)all year004
Formaldehydemonthly average≤ .65 mg/Lall year004
Formaldehydedaily maximum≤ 1.3 mg/Lall year004
Mercury, total recoverabledaily maximumreport only (ug/L)all year004
Turbiditydaily maximumreport only (NTU)all yearINF1
Oxygen, dissolved [DO]daily minimumreport only (mg/L)all yearINF1
pHdaily maximumreport only (SU)all yearINF1
Solids, total suspendeddaily maximumreport only (mg/L)all yearINF1
Solids, settleabledaily maximumreport only (mL/L)all yearINF1
Nitrogen, total [as N]daily maximumreport only (mg/L)all yearINF1
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all yearINF1
Sulfate, total [as SO4]daily maximumreport only (mg/L)all yearINF1
Arsenic, total recoverabledaily maximumreport only (ug/L)all yearINF1
Selenium, total recoverabledaily maximumreport only (ug/L)all yearINF1
Thallium, total recoverabledaily maximumreport only (ug/L)all yearINF1
Beryllium, total recoverable [as Be]daily maximumreport only (ug/L)all yearINF1
Chromium, hexavalent [as Cr]daily maximumreport only (ug/L)all yearINF1
Chromium, trivalent [as Cr]daily maximumreport only (ug/L)all yearINF1
Nickel, total recoverabledaily maximumreport only (ug/L)all yearINF1
Silver total recoverabledaily maximumreport only (ug/L)all yearINF1
Zinc, total recoverabledaily maximumreport only (ug/L)all yearINF1
Cadmium, total recoverabledaily maximumreport only (ug/L)all yearINF1
Lead, total recoverabledaily maximumreport only (ug/L)all yearINF1
Copper, total recoverabledaily maximumreport only (ug/L)all yearINF1
Antimony, total recoverabledaily maximumreport only (ug/L)all yearINF1
Manganese, total recoverabledaily maximumreport only (ug/L)all yearINF1
Solids, total dissolveddaily maximumreport only (mg/L)all yearINF1
Mercury, total recoverabledaily maximumreport only (ug/L)all yearINF1
Turbiditydaily maximumreport only (NTU)all yearINF3
Oxygen, dissolved [DO]daily minimumreport only (mg/L)all yearINF3
pHdaily maximumreport only (SU)all yearINF3
Solids, total suspendeddaily maximumreport only (mg/L)all yearINF3
Solids, settleabledaily maximumreport only (mL/L)all yearINF3
Nitrogen, total [as N]daily maximumreport only (mg/L)all yearINF3
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all yearINF3
Sulfate, total [as SO4]daily maximumreport only (mg/L)all yearINF3
Arsenic, total recoverabledaily maximumreport only (ug/L)all yearINF3
Selenium, total recoverabledaily maximumreport only (ug/L)all yearINF3
Thallium, total recoverabledaily maximumreport only (ug/L)all yearINF3
Beryllium, total recoverable [as Be]daily maximumreport only (ug/L)all yearINF3
Chromium, hexavalent [as Cr]daily maximumreport only (ug/L)all yearINF3
Chromium, trivalent [as Cr]daily maximumreport only (ug/L)all yearINF3
Nickel, total recoverabledaily maximumreport only (ug/L)all yearINF3
Silver total recoverabledaily maximumreport only (ug/L)all yearINF3
Zinc, total recoverabledaily maximumreport only (ug/L)all yearINF3
Cadmium, total recoverabledaily maximumreport only (ug/L)all yearINF3
Lead, total recoverabledaily maximumreport only (ug/L)all yearINF3
Copper, total recoverabledaily maximumreport only (ug/L)all yearINF3
Antimony, total recoverabledaily maximumreport only (ug/L)all yearINF3
Manganese, total recoverabledaily maximumreport only (ug/L)all yearINF3
Solids, total dissolveddaily maximumreport only (mg/L)all yearINF3
Mercury, total recoverabledaily maximumreport only (ug/L)all yearINF3
Turbiditydaily maximumreport only (NTU)all yearINF4
Oxygen, dissolved [DO]daily minimumreport only (mg/L)all yearINF4
pHdaily maximumreport only (SU)all yearINF4
Solids, total suspendeddaily maximumreport only (mg/L)all yearINF4
Solids, settleabledaily maximumreport only (mL/L)all yearINF4
Nitrogen, total [as N]daily maximumreport only (mg/L)all yearINF4
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all yearINF4
Sulfate, total [as SO4]daily maximumreport only (mg/L)all yearINF4
Arsenic, total recoverabledaily maximumreport only (ug/L)all yearINF4
Selenium, total recoverabledaily maximumreport only (ug/L)all yearINF4
Thallium, total recoverabledaily maximumreport only (ug/L)all yearINF4
Beryllium, total recoverable [as Be]daily maximumreport only (ug/L)all yearINF4
Chromium, hexavalent [as Cr]daily maximumreport only (ug/L)all yearINF4
Chromium, trivalent [as Cr]daily maximumreport only (ug/L)all yearINF4
Nickel, total recoverabledaily maximumreport only (ug/L)all yearINF4
Silver total recoverabledaily maximumreport only (ug/L)all yearINF4
Zinc, total recoverabledaily maximumreport only (ug/L)all yearINF4
Cadmium, total recoverabledaily maximumreport only (ug/L)all yearINF4
Lead, total recoverabledaily maximumreport only (ug/L)all yearINF4
Copper, total recoverabledaily maximumreport only (ug/L)all yearINF4
Antimony, total recoverabledaily maximumreport only (ug/L)all yearINF4
Manganese, total recoverabledaily maximumreport only (ug/L)all yearINF4
Solids, total dissolveddaily maximumreport only (mg/L)all yearINF4
Mercury, total recoverabledaily maximumreport only (ug/L)all yearINF4

How strict are these limits?

Cited limits by parameter: California's rules and the federal ones.

Same industry: the 8 Fishing, Hunting and Trapping permits in California.

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Your permit document is the final word. As JSON: /api/v1/permits/CA0102776 · MCP: https://passage-data.com/mcp