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Bob Tyler Fish Hatchery

Fish Hatcheries And Preserves, Enid, Mississippi. NPDES permit MS0058891, in force until Dec 31, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (15 values), form Q quarterly (16 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 16 reports late

Limits in force (31)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year
Temperature, water deg. fahrenheitdaily maximum≤ 90 deg Fall year
Oxygen, dissolved [DO]minimum≥ 6 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 15 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 25 lb/dall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 38 lb/dall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Nitrogen, total [as N]quarterly averagereport only (mg/L)all year
Nitrogen, total [as N]quarterly maximumreport only (mg/L)all year
Nitrogen, total [as N]quarterly averagereport only (lb/d)all year
Nitrogen, total [as N]quarterly maximumreport only (lb/d)all year
Nitrogen, ammonia total [as N]monthly average≤ 1.37 mg/Lall year
Nitrogen, ammonia total [as N]daily maximum≤ 2.06 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 3.92 lb/moall year
Nitrogen, ammonia total [as N]daily maximum≤ 5.9 lb/moall year
Nitrogen, Kjeldahl, total [as N]quarterly averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]quarterly maximumreport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]quarterly averagereport only (lb/d)all year
Nitrogen, Kjeldahl, total [as N]quarterly maximumreport only (lb/d)all year
Nitrite + Nitrate total [as N]quarterly averagereport only (mg/L)all year
Nitrite + Nitrate total [as N]quarterly maximumreport only (mg/L)all year
Nitrite + Nitrate total [as N]quarterly averagereport only (lb/d)all year
Nitrite + Nitrate total [as N]quarterly maximumreport only (lb/d)all year
Phosphorus, total [as P]quarterly averagereport only (mg/L)all year
Phosphorus, total [as P]quarterly maximumreport only (mg/L)all year
Phosphorus, total [as P]quarterly averagereport only (lb/d)all year
Phosphorus, total [as P]quarterly maximumreport only (lb/d)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year

How strict are these limits?

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

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MS0058891 · MCP: https://passage-data.com/mcp