| AC.Ft. | = | Acre Feet | MIT | = | Mitigation | |
| AE | = | Adverse Effect | MP | = | Mitigation Plan (w/permit documentation) | |
| AF | = | Acre Feet | MRWRCC | = | Montana Reserved Water Rights Compact Commission | |
| ArcGIS | = | Customized project to map water rights | MUSWC | = | Montana University System Water Center | |
| ARM | = | Administrative Rules of Montana | MW | = | Mitigation Water | |
| ASD | = | Adjudication Shared Drive | NASS | = | National Agricultural Statistic Service | |
| ATR | = | Aquifer Testing Requirements | NDA | = | Net Depletion Analysis | |
| BCA | = | Basin Closure Area | NEPA | = | National Environmental Protection Act | |
| BCE | = | Basin Closure Exemption | NRCS | = | National Resource Conservation Service | |
| BIA | = | Bureau of Indian Affairs | NRIS | = | Natural Resource Information Service | |
| BWUP | = | Beneficial Water Use Permit | PBU | = | Proposed Beneficial Use | |
| C/C | = | Correct & Complete 85-23-436(8) | PD | = | Priority Date | |
| CERCLA | = | Comprehensive Environmental Response, Compensation & Liability Act | PD | = | Preliminary Decree (Courts) | |
| CF | = | Change Form | PD | = | Preliminary Determination (DNRC) | |
| CFS | = | Cubic Feet per Second | PDD | = | Preliminary Determination to Deny (DNRC) | |
| CSKT | = | Confederated Salish & Kootenai Tribes | PDG | = | Preliminary Determination to Grant (DNRC) | |
| DCMI | = | Domestic, Commercial, Municipal & Industrial uses | POD | = | Point of Diversion | |
| DEQ | = | Dept. of Environmental Quality (MT) | POD | = | Period of Diversion | |
| DFWP | = | Montana Dept. of Fish, Wildlife & Parks | POS | = | Place of Storage | |
| DL | = | Deficiency Letter | POU | = | Point of Use | |
| DNRC | = | Dept. of Natural Resource Conservation | PWR | = | Paper Water Rights | |
| DOR | = | Dept. of Revenue (MT) | RTC | = | Realty Transfer Certificate | |
| DPD | = | Draft Preliminary Determination | RWRCC | = | Reserved Water Right Compact Commission | |
| ELDI | = | Existing Legal Demand Index | SCI | = | Substantial Credible Information | |
| FERC | = | Federal Energy Regulatory Commission | SDE | = | Stream Depletion Evaluation | |
| FIIP | = | Flathead Indian Irrigation Project | SR | = | Summary Report | |
| FJBC | = | Flathead Joint Board of Control (represents the Flathead, Jocko Valley and Mission irrigation districts) | SWR | = | Supplemental Water Rights | |
| FR | = | Flow Rate | TCA | = | Temporary Change Addendum | |
| FTA | = | Farm Turnout Allowance | UMO | = | Unitary Administration & Management Ordinance | |
| FWP | = | Fish, Wildlife & Parks (MT) | USDA | = | United States Dept. of Agriculture | |
| GIS | = | Geographical Information System | USGS | = | United States Geological Survey | |
| GWA | = | Ground Water Application | WPIC | = | Water Policy Interim Committee | |
| GWIC | = | Groundwater Investigation Center | WQR | = | Water Quality Report | |
| GWUDISW | = | Groundwater under the direct influence of surface water | WRCER | = | Water Right Claim Examination Rules | |
| HBU | = | Historic Beneficial Use | WRS | = | Water Resources Survey | |
| IWR | = | Irrigation Water Requirement (Duty) | WWR | = | Wet Water Rights | |
| LEQC | = | Legislative Environmental Quality Council | ZOI | = | Zone of Influence | |
| MCA | = | Montana Code Annotated |
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