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Rule Title: EVAPORATION STANDARDS
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Department: NATURAL RESOURCES AND CONSERVATION
Chapter: WATER RIGHTS BUREAU
Subchapter: Montana Water Use Act
 
Latest version of the adopted rule presented in Administrative Rules of Montana (ARM):

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36.12.116    EVAPORATION STANDARDS

(1) Net evaporation will evaluated using:

(a) Estimation of Evaporation from Shallow Ponds and Impoundments in Montana, Donald E. Potts, Miscellaneous Publication No. 48, Montana Conservation and Experiment Station School of Forestry, University of Montana, Missoula, March 1988;

(b) Evaporation Pond Design for Agricultural Wastewater Disposal, USDA Soil Conservation Service, Montana Technical Note: Environment No. 7, February 1974; or

(c) other department-approved methods. 

(2) If the applicant proposes to deviate from the acceptable standards in (1), the applicant will be required to provide additional information supporting the volume requested for net evaporation.

(3) The department will determine the acceptability of other net evaporation estimates on a case-by-case basis.

 

History: 85-2-113, MCA; IMP, 85-2-301 through 85-2-319, 85-2-321 through 85-2-323, 85-2-329 through 85-2-331, 85-2-335 through 85-2-338, 85-2-340 through 85-2-344, 85-2-351, 85-2-401, 85-2-402, 85-2-407, 85-2-408, 85-2-410 through 85-2-413, 85-2-415 through 85-2-419, 85-2-436, 85-2-501 through 85-2-512, 85-2-601 through 85-2-606, 85-2-608, 85-2-804 through 85-2-806, MCA; NEW, 2005 MAR p. 101, Eff. 1/1/05; AMD, 2023 MAR p. 1872, Eff. 1/1/24.


 

 
MAR Notices Effective From Effective To History Notes
36-22-219 1/1/2024 Current History: 85-2-113, MCA; IMP, 85-2-301 through 85-2-319, 85-2-321 through 85-2-323, 85-2-329 through 85-2-331, 85-2-335 through 85-2-338, 85-2-340 through 85-2-344, 85-2-351, 85-2-401, 85-2-402, 85-2-407, 85-2-408, 85-2-410 through 85-2-413, 85-2-415 through 85-2-419, 85-2-436, 85-2-501 through 85-2-512, 85-2-601 through 85-2-606, 85-2-608, 85-2-804 through 85-2-806, MCA; NEW, 2005 MAR p. 101, Eff. 1/1/05; AMD, 2023 MAR p. 1872, Eff. 1/1/24.
1/1/2005 1/1/2024 History: 85-2-113, MCA; IMP, 85-2-301 through 85-2-319, 85-2-321 through 85-2-323, 85-2-329 through 85-2-331, 85-2-335 through 85-2-338, 85-2-340 through 85-2-344, 85-2-350, 85-2-351, 85-2-401, 85-2-402, 85-2-407, 85-2-408, 85-2-410 through 85-2-413, 85-2-415 through 85-2-419, 85-2-436, 85-2-437, 85-2-439, 85-2-501 through 85-2-512, 85-2-601 through 85-2-606, 85-2-608, 85-2-804 through 85-2-806, MCA; NEW, 2005 MAR p. 101, Eff. 1/1/05.
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