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USDINPS-Buffalo National River - Buffalo Point Lower Plant [U2-B]

Federal facility (Trailer Parks And Campsites), Yellville, Arkansas. NPDES permit AR0034941 expired Apr 30, 2025; its limits still apply. Last 12 months: over a limit 2 times (last June 2026), 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form A1 monthly (32 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
5 values over a limit, 0 required values missing, 2 of 12 reports late

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

Period endingParameterReportedLimitOver by
April 2026Phosphorus, total [as P], monthly average1.3 mg/L≤ 1 mg/L30%
June 2026Chlorine, total residual, instantaneous maximum< 2 mg/L≤ .033 mg/L5961%

Limits in force (36)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 2 mg/Lall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 15 mg/Lall year
Solids, total suspendeddaily maximum≤ 22.5 mg/Lall year
Solids, total suspendedmonthly average≤ 2.5 lb/dall year
Solids, total suspendeddaily maximum≤ 3.75 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 10 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 5 mg/LMay–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 15 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 7.5 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 1.67 lb/dJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ .83 lb/dMay–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 2.5 lb/dJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 1.25 lb/dMay–Oct
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (lb/d)all year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (lb/d)all year
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year
Nitrite + Nitrate total [as N]monthly averagereport only (lb/d)all year
Nitrite + Nitrate total [as N]daily maximumreport only (lb/d)all year
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year
Phosphorus, total [as P]daily maximum≤ 1.5 mg/Lall year
Phosphorus, total [as P]monthly average≤ .17 lb/dall year
Phosphorus, total [as P]daily maximum≤ .25 lb/dall 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
Chlorine, total residualinstantaneous maximum≤ .033 mg/Lall year
E. coli30-day geometric mean≤ 126 #/100mLall year
E. coli7-day geometric mean≤ 126 #/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 15 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 1.67 lb/dall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 2.5 lb/dall year

How strict are these limits?

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

Same industry: the 55 Hotels, Rooming Houses, Camps and Other Lodging permits in Arkansas.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/AR0034941 · MCP: https://passage-data.com/mcp