Idaho Code
Idaho Code

Idaho Code § 42-603 (2026)

Supervision of water distribution — Rules and regulations. 

✓ current as of May 2026
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Supervision of water distribution — Rules and regulations. 

The director of the department of water resources is authorized to adopt rules and regulations for the distribution of water from the streams, rivers, lakes, ground water and other natural water sources as shall be necessary to carry out the laws in accordance with the priorities of the rights of the users thereof. Promulgation of rules and regulations shall be in accordance with the procedures of chapter 52, title 67, Idaho Code.

Notes of Decisions
Cited in 4 cases, 2007–2013 · leading case: Am. Falls Reservoir Dist. No. 2 v. Idaho Dep't of Water Resources, 154 P.3d 433 (Idaho 2007).
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Am. Falls Reservoir Dist. No. 2 v. Idaho Dep't of Water Resources, 154 P.3d 433 (Idaho 2007). “FACTUAL AND PROCEDURAL BACKGROUND In 1994, pursuant to statutory authority found in Idaho Code sections 42-603 and 42-1805, the Director of the Idaho Department of Water Resources (Director), promulgated the CM Rules to provide the procedures for responding to delivery calls…”
Nelson v. Big Lost River Irrigation Dist., 219 P.3d 804 (Idaho 2009). · cites it 2× “” I.C. § 42-603. Water districts are created pursuant to Idaho Code § 42-604 , while irrigation districts are created pursuant to Idaho Code § 43-101 et seq.”
In Re Distrib. of Water to Various Water Rights, 315 P.3d 828 (Idaho 2013). · cites it 2× “” I.C. § 42-603. The Director has done so in the Conjunctive Management Rules (CM Rules), which were approved by the Legislature and became effective on October 7, *651 1994.”
A&B Irrigation v. ID Dpt of Water Resources (Idaho 2013). · cites it 2× “” I.C. § 42-603. The Director has done so in the Conjunctive Management Rules (CM Rules), which were approved by the Legislature and became effective on October 7, 1994.”
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