Flood Plain Development Permit in Unincorporated Sheridan County, Wyoming
VerifiedRequired countywide (including outside the Building Standards Area) for development activity within the mapped Special Flood Hazard Area, under Sheridan County's Rules and Regulations Governing Flood Plain Management. Covers new construction, substantial improvements, fill placement, and other development in the floodplain.
Verified 2026-07-01 · Source
When you need this permit
- Required for new construction, substantial improvement, fill placement, storage of materials/equipment, or drainage facility work within the mapped floodplain
- Plans in duplicate, drawn to scale, showing elevations of the project area and nature/location/dimensions of existing and proposed structures
- Elevation (NAVD 88) of the lowest floor level (including crawl space or basement) of all proposed structures
- Base Flood Elevation (BFE), with method and supporting documentation
- Design certification from a registered PE or architect for any flood-proofed non-residential structure
- Description of the extent to which any watercourse will be altered or relocated
- As-built Elevation Certificate (FEMA form) required immediately after the lowest floor/flood-proofing level is completed
- Permit expires one year after issuance unless the permitted activity has substantially begun and is pursued to completion
Required documents
- Req
Flood Plain Development Permit Application
Sheridan County Public Works application form, including the Floodway No-Rise Certificate template
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Flood Plain Development Permit fee (nonrefundable) | $100.00 | Sheridan County Flood Plain Development Permit Application |
Review timeline
~5–20 business days
Typical estimate — confirm current times with the Unincorporated Sheridan County building department
Inspection process
- 1
Elevation Certification
As-built Elevation Certificate or flood-proofing certification submitted immediately after the lowest floor/flood-proofing level is completed
Tips
- This permit applies countywide wherever a parcel is within the mapped Special Flood Hazard Area — it is independent of whether the parcel is inside or outside the Building Standards (building-code) Area.
- A Floodway No-Rise Certificate (signed by a Wyoming-licensed PE) is required when the proposed development is within a regulatory floodway and must show no impact on base flood elevations.
Frequently asked questions
- Do I need a separate permit if my property is in a floodplain in Sheridan County?
- Yes. A Flood Plain Development Permit ($100) is required for development within the mapped Special Flood Hazard Area in unincorporated Sheridan County, regardless of whether the parcel is otherwise inside or outside the county's limited Building Standards Area.
Sources & verification
Verified against official sources. Last reviewed 2026-07-01.
- Sheridan County Public Works Department (Planning / Building Official) — official building department
- Sheridan County Flood Plain Development Permit Application
Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Unincorporated Sheridan County building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.
Other permits in Unincorporated Sheridan County
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