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U.S. Fish and Wildlife Service - Norfork National Fish Hatchery

Federal facility (Fish Hatcheries And Preserves), Mountain Home, Arkansas. NPDES permit AR0002437, in force until Nov 30, 2027. Last 12 months: no values over a limit, 2 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due

About 25 days after each period: outfall SUM form A monthly (17 values), outfall TXS form T every 60 months

Renewal application due

Jun 3, 2027 · 180 days before expiry; your permit may set another date

Last report on file

August 2026

Oct 2024 – Sep 2025

0 values over a limit, 0 required values missing, 2 of 12 reports late

Limits in force (37)

How strict are these limits?

• Oxygen, dissolved [DO], instantaneous minimum at least 6 mg/L — stricter than 86% of 23 other minor federal facilities in Arkansas; 13% have the same limit
• Nitrogen, ammonia total [as N], daily maximum 3.9 mg/L — stricter than 72% of 74 other minor federal facilities nationwide; 1% have the same limit
• Nitrogen, ammonia total [as N], monthly average 3 mg/L — stricter than 61% of 76 other minor federal facilities nationwide; 3% have the same limit

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

Same industry: the 3 Fishing, Hunting and Trapping permits in Arkansas.

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/AR0002437 · MCP: https://passage-data.com/mcp