Wyoming
The stormwater permit for construction in Wyoming
Wyoming runs its own NPDES programme, so a state issued construction general permit governs. Below is what our engine can say about it, and where we have not read that permit, what it will not say.
Governing permit
Not verified for Wyoming
We have not read the construction general permit that governs this jurisdiction, so we will not name one. Confirm which permit applies with Wyoming Department of Environmental Quality (WDEQ), Water Quality Division before you break ground.
Who may prepare the plan
Not verified for this stateWyoming gates plan preparation conditionally. Confirm which case applies to your plan before relying on a generated document.
PARTIAL. Wyoming issues two construction general permits: the Large CGP for disturbance of 5 or more acres, and the Small CGP for 1 to under 5 acres, which is a no-application permit. Both statements were read on the WDEQ page. UNCONFIRMED LEAD: EPA ECHO facility records roll Wyoming construction authorizations up to a master permit numbered WYR100000, which most likely refers to the Large CGP only; whether the Small CGP carries its own number is unknown. That number is deliberately NOT recorded in permitNumber because it was never read from the face of the permit. WDEQ serves permit documents through a JavaScript widget that could not be read, so the permit text was never opened and the preparer credential is unverified. Confirm both with the WDEQ Water Quality Division.
No permit section cited. Confirm this with your permitting authority.
Does a site in Wyoming need coverage
Worked for a one acre site as a reference point. Change the acreage in the tool below and the answer, and its reasoning, change with it.
Coverage
Permit coverage required
The project disturbs 1 acres, at or above the 1 acre threshold, so it needs permit coverage.
Determined against dataset version 2026-07-19.
Read these before you act on the answer
- We could not verify which permit governs a construction site in Wyoming. Confirm with the state permitting authority before you break ground.
- Wyoming gates plan preparation conditionally. Confirm which case applies to your plan before relying on a generated document.
- Basinwise does not perform the physical site inspections the permit requires. Those must be carried out on site by a qualified person.
How this answer was reached, step by step
- 1
Coverage threshold
The project disturbs 1 acres, at or above the 1 acre threshold, so it needs permit coverage.
- 2
Permitting authority
Wyoming runs its own NPDES programme, and we have not verified its construction general permit. We will not guess its requirements.
- 3
Preparer credential
Wyoming gates plan preparation conditionally. Confirm which case applies to your plan before relying on a generated document.
What to do next
- 1. Confirm the governing permit. We have not verified this. Contact Wyoming Department of Environmental Quality (WDEQ), Water Quality Division and ask which construction general permit covers your site. Wyoming Department of Environmental Quality (WDEQ), Water Quality Division
- 2. Settle the preparer question before you draft. We have not verified whether a credentialed preparer is required here. Ask the agency before anybody starts writing. Preparer credential in Wyoming
- 3. Screen the site. Run the real acreage and receiving water facts through the tool below. You get the inspection frequency, the stabilisation deadlines and the filing path with the permit section behind each.
- 4. Read the requirements in full. SWPPP requirements in Wyoming
Screen a Wyoming site now
Runs in your browser. Nothing about the site is transmitted.
What people ask about the Wyoming construction stormwater permit
Do I need a stormwater permit for a construction site in Wyoming?
Permit coverage is triggered at one acre of land disturbance, and below one acre if the project is part of a larger common plan of development or sale that will ultimately disturb an acre or more. The project disturbs 1 acres, at or above the 1 acre threshold, so it needs permit coverage.
Who issues the construction stormwater permit in Wyoming?
We have not verified which permit governs construction stormwater in Wyoming. Confirm with Wyoming Department of Environmental Quality (WDEQ), Water Quality Division before you break ground. We will not name a permit we have not read.
Does Wyoming require a qualified preparer for the plan?
Wyoming gates plan preparation conditionally. Confirm which case applies to your plan before relying on a generated document.
Keep the record Wyoming will ask you for
The screening is free. Holding the written plan and the retained inspection log is what the permit actually demands.