Idaho Administrative Code Title IDAPA 37 - Water Resources, Department of
The Idaho Administrative Code Title 37 (IDAPA 37) contains the official rules of the Idaho Department of Water Resources (IDWR).
🔹 IDAPA 37 – Department of Water Resources
The IDWR is responsible for the management, conservation, allocation, and protection of Idaho’s water resources. The rules under IDAPA Title 37 govern how water rights are administered, how water is measured and used, and how groundwater and surface water interactions are regulated across the state.
🔸 Major Areas Covered Under IDAPA 37
Here are key subject areas addressed by the IDWR rules:
| Chapter | Title |
|---|---|
| 37.01.01 | Rules of Procedure of the IDWR |
| 37.01.02 | Water Supply Bank Rules |
| 37.01.03 | Adjudication Rules |
| 37.01.04 | Licensing of Water Right Examiners |
| 37.02.01 | Comprehensive State Water Plan Rules |
| 37.03.01 | Well Construction Standards Rules |
| 37.03.03 | Drilling for Geothermal Resources |
| 37.03.04 | Drilling Permit Rules |
| 37.03.06 | Safety of Dams Rules |
| 37.03.07 | Stream Channel Alteration Rules |
| 37.03.09 | Well Driller Licensing Rules |
| 37.03.11 | Water Measurement and Reporting Rules |
| 37.03.12 | Rules Governing Conjunctive Management of Surface and Ground Water Resources |
🔹 Highlights of Important Chapters
37.01.01 – Rules of Procedure
Governs the procedures IDWR follows in processing applications, conducting hearings, and issuing decisions.
37.01.02 – Water Supply Bank
Rules for leasing unused water rights to others via the Water Supply Bank.
37.03.01 – Well Construction Standards
Technical and safety requirements for drilling, constructing, and modifying wells.
37.03.12 – Conjunctive Management Rules
Key for managing how groundwater withdrawals impact senior surface water rights — includes priority calls and mitigation plans.
37.03.06 – Dam Safety
Ensures the structural safety of dams and reservoirs, including inspection and permitting requirements.
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