Polygon layer · Water
Basin closure map and water regulatory overlays
The administrative boundaries that decide what you are allowed to do.
A basin closure map answers the question that decides whether a project is even possible: can you apply for new water here at all? In much of the West the answer is no, and finding that out after commissioning a hydrology study is an expensive way to learn it.
- Source
- State water agencies
- Refresh
- Monthly
- Geometry
- Polygon
- Included from
- Water ($99/mo)
Why Water Reg. Overlays matters
Two parcels a mile apart can sit on opposite sides of a management-area line, and that line can be the difference between a permit that takes ninety days and one that is legally unavailable at any price. Overlays are the cheapest disqualifier to check and the most expensive one to miss.
Questions Water Reg. Overlays answers
- Is this parcel inside a basin closed to new appropriation?
- Which agency actually administers water here?
- Do groundwater restrictions apply at this location?
What is in the Water Reg. Overlays data
Coverage: Western states that publish administrative boundaries. Source dataset: Administrative and regulatory overlay boundaries.
| Field | What it tells you |
|---|---|
| Overlay name | The designated area as the state names it. |
| Overlay type | Management area, closed basin, groundwater district, critical area or similar. |
| Administering agency | Who enforces the rule inside the boundary. |
How we serve Water Reg. Overlays
Overlay polygons are served from Postgres through the tile function and rendered as a distinct violet family so administrative boundaries never read as hydrology.
Basin closure map — source, refresh and coverage
- Steward
- State water agencies
- Dataset
- Administrative and regulatory overlay boundaries
- Refresh cadence
- Monthly
- Coverage
- Western states that publish administrative boundaries
- Records
- 2,641 rows
- Geometry
- Polygon
- Included from
- Water ($99/mo/mo)
Who uses Water Reg. Overlays
Water Rights Investing
Price seniority, spot the mismatch between paper water and wet water, and find positions before they are listed.
Legal & Title Diligence
Authoritative records, chain context and export-ready evidence for adjudication and title work.
Data Centers & AI Infrastructure
Power, water, fiber and permitting risk for every candidate site — before you send anyone to look at it.
Government & Basin Management
A statewide inventory, live supply monitoring, and a public-facing record without building the platform.
Read Water Reg. Overlays alongside
Water Rights
2.1M+ adjudicated water rights across 17 western states, on one map.
Watershed Basins
USGS hydrologic unit boundaries — the unit water is actually managed in.
Groundwater Wells
Well locations and depth records where the aquifer is the real supply.
CO Water Structures
Colorado's diversion structures at the depth CDSS actually publishes.
Terms used on this page
See Water Reg. Overlays on the map
This layer is included from Water ($99/mo) upward, alongside every other layer in the Water coverage.