Regulations
- Webpage
Farms and composting in Wisconsin
In Wisconsin, farmers may compost crop residues, manure and animal carcasses generated on their farm sites. Depending on the material and size of the farming operation, DNR wastewater and/or solid waste rules may apply. In most cases, a DNR…
- Webpage
Water Quality Standards and Classifications
Water quality standards are important because they help water quality managers protect and restore the quality of Wisconsin's waters. Our water quality may be impacted by many different sources and types of pollution. Under the Clean Water Act,…
- Webpage
Water Quality Criteria
The Clean Water Act requires states to adopt water quality standards to protect aquatic life, wildlife and recreation. Water quality standards consist of three components: antidegradation, designated uses and water quality criteria. Water quality…
- Webpage
Triennial Standards Review
Final 2025-2027 Triennial Standards Review Workplan Now AvailableThe final work plan, 2025-2027 Triennial Standards Review (TSR) Priorities for the Water Quality Standards Program, is available for download.
- Webpage
Lake Superior lake trout, splake and brook trout comparison
Lake Trout (top) Splake (middle) "Coaster" Brook Trout (bottom) Lake Trout (left) will have a deeply forked tail. Splake (middle) has a moderately forked tail. "Coaster" Brook Trout (right) has only a slightly forked tail. Splake has a…
- Webpage
Recreation rules and permits
Wisconsin state parks, forests and trails have special rules to protect the safety of visitors and the environment. See Chapter NR 45 of the Wisconsin Administrative Code for the legal language or this page for the basic information about many rules…
- Webpage
Invasive species rule – NR 40
The invasive species rule, Wis. Admin. Code NR 40, makes it illegal to possess, transport, transfer or introduce certain invasive species in Wisconsin without a permit. Everyone is responsible to comply with these regulations. What you need to do as…
- Webpage
Waterfowl Rules Process
Migratory Rules The migratory rules are different from other program ru
- Webpage
Fishing seasons
Opening day for Wisconsin fishing is traditionally the first Saturday in May. Season dates often vary by species and waterbody. Check The Guide To Hook And Line Fishing Season Dates, 2025-2026, for specifics of where you plan to fish.Fishing…
- Webpage
Lake Michigan Tributary Access
Marinette [PDF] Oconto River [PDF] Green Bay [PDF] Door County - North