Montana Code Annotated

Mont. Code Ann. § 85-2-360 (2026)

Ground Water Appropriation Right In Closed Basins

✓ current as of May 2026
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TITLE 85. WATER USE

CHAPTER 2. SURFACE WATER AND GROUND WATER

Part 3. Appropriations, Permits, and Certificates of Water Rights

Ground Water Appropriation Right In Closed Basins

85-2-360. Ground water appropriation right in closed basins. (1) An application for a ground water appropriation right in a basin closed pursuant to 85-2-319, 85-2-321, 85-2-330, 85-2-336, 85-2-341, 85-2-343, or 85-2-344 must be accompanied by a hydrogeologic report conducted pursuant to 85-2-361, an aquifer recharge or mitigation plan if required, and an application for a change in appropriation right or rights if necessary.

(2) The department shall use the hydrogeologic report to determine if the proposed appropriation right could result in a net depletion of surface water.

(3) (a) For the purposes of 85-2-360 through 85-2-362, the prediction of net depletion does not mean that an adverse effect on a prior appropriator will occur or if an adverse effect does occur that the entire amount of net depletion is the cause of the adverse effect. A determination of whether or not there is an adverse effect on a prior appropriator as the result of a new appropriation right is a determination that must be made by the department based on the rate, location, and timing of the net depletion that causes the adverse effect relative to the historic beneficial use of the appropriation right that may be adversely affected.

(b) The department may not consider an adverse effect caused by the grant of an application pursuant to this section on any water right listed on a written consent to approval filed pursuant to 85-2-311.

(c) The department may grant a permit for a new appropriation only if the applicant proves by a preponderance of the evidence that the adverse effect would be offset through an aquifer recharge or mitigation plan that meets the requirements of 85-2-362.

History: En. Sec. 14, Ch. 391, L. 2007; amd. Sec. 7, Ch. 335, L. 2013; amd. Sec. 4, Ch. 243, L. 2017; amd. Sec. 3, Ch. 171, L. 2025.

Notes of Decisions
Cited in 3 cases (1 in the last 5 years), 2013–2025 · leading case: Clark Fork Coalition v. Montana Wel, 2016 MT 229 (Mont. 2016).
Clark Fork Coalition v. Montana Wel, 2016 MT 229 (Mont. 2016). · cites it 10× “Section 85-2-360(1)-(3), MCA. The DNRC may 5 consider groundwater permits, but the process for obtaining a groundwater permit in a closed basin is demanding.”
Bostwick Props., Inc. v. Montana Dep't of Nat. Resources & Conservation, 2013 MT 48 (Mont. 2013). · cites it 39× “The District Court agreed with DNRC that Bostwick had failed to prove no net depletion of surface water and lack of adverse effect, as required by § 85-2-360, MCA, and therefore Bostwick was required to mitigate its water usage in order to receive a water use permit.”
Trout Unlimited v. DNRC, 2025 MT 1 (Mont. 2025). · cites it 3× “The Mine is also located within a subbasin of the Upper Missouri River, which is open to new surface water appropriations but provisionally closed to new groundwater appropriations and therefore necessitates that any new groundwater permit be accompanied by a mitigation plan in…”
Mont. Code Ann. § 85-2-360(1): 1 case
Clark Fork Coalition v. Montana Wel, 2016 MT 229 (Mont. 2016). “Section 85-2-360(1)-(3), MCA. The DNRC may 5 consider groundwater permits, but the process for obtaining a groundwater permit in a closed basin is demanding.”
Mont. Code Ann. § 85-2-360(2): 1 case
Clark Fork Coalition v. Montana Wel, 2016 MT 229 (Mont. 2016). “Section 85-2-360(1)-(3), MCA. The DNRC may 5 consider groundwater permits, but the process for obtaining a groundwater permit in a closed basin is demanding.”
Mont. Code Ann. § 85-2-360(3)(b): 1 case
Clark Fork Coalition v. Montana Wel, 2016 MT 229 (Mont. 2016). “Section 85-2-360(1)-(3), MCA. The DNRC may 5 consider groundwater permits, but the process for obtaining a groundwater permit in a closed basin is demanding.”
Mont. Code Ann. § 85-2-360(5): 1 case
Bostwick Props., Inc. v. Montana Dep't of Nat. Resources & Conservation, 2013 MT 48 (Mont. 2013). “The District Court agreed with DNRC that Bostwick had failed to prove no net depletion of surface water and lack of adverse effect, as required by § 85-2-360, MCA, and therefore Bostwick was required to mitigate its water usage in order to receive a water use permit.”
Mont. Code Ann. § 85-2-360(l): 1 case
Clark Fork Coalition v. Montana Wel, 2016 MT 229 (Mont. 2016). “Section 85-2-360(1)-(3), MCA. The DNRC may 5 consider groundwater permits, but the process for obtaining a groundwater permit in a closed basin is demanding.”
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