Groundwater Management Plan North Platte Natural Resources District November 1993
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GROUNDWATER MANAGEMENT PLAN NORTH PLATTE NATURAL RESOURCES DISTRICT NOVEMBER 1993 OLSSON ASSOCIATES LINCOLN, NEBRASKA REVISED GROUNDWATER MANAGEMENT PLAN NORTH PLATTE NATURAL RESOURCES DISTRICT NOVEMBER 1993 BOARD OF DIRECTORS Leroy Pieper - Chairman Jim Olson - Vice Chairman Quentin "Bud" C. Morse - Secretary Harvey Dutton - Treasurer Jerry L. Colburn Bob Gifford Ronald Miller Allen Peterson Mervyn Gompert WATER RESOURCES COMMITTEE Allen Peterson - Chairman Mervyn Gompert Bob Gifford Leroy Pieper STAFF Ronald D. Cacek - Manager Jim Cannia - Water Specialist Roy Lyles - Resource Specialist Dave Ostdiek - I & E Specialist Charline Tunink - Bookkeeper Sally Peterson - Secretary Table of Contents Page Number List of Acronyms................................... .................... vi Abbreviations and Conversion Factors .................... viii 1.0 Introduction .... ........................ ........................ ........................ 1-1 1.1 Previous NRD Groundwater Planning Efforts ............ 1-2 1.2 Progress to Date Towards Achieving the Groundwater Reservoir Life Goal ...... ........................ 1-3 1.3 Review Letters on 1986 GWMP ......... ........................ 1-13 1.4 Documentation of Public Participation ........................ 1-13 1.5 A General Description of the North Platte Natural Resources District ................. ........................ 1-13 2.0 Hydrogeologic Characteristics ........................ ........................ 2-1 2.1 Aquifer Description .... ........................ ........................ 2-1 2.2 Aquifer Vulnerability Description ...... ........................ 2-28 3.0 Water Quality Inventory ......... ........................ ........................ 3-1 3.1 Current Water Quality Monitoring Program and Results ................. ........................ ........................ 3-1 3.2 Existing Water Quality Summary ....... ........................ 3-27 3.3 Other Potential Areas of concern for Groundwater Quality . ........................ ........................ 3-39 4.0 Land Use and Contamination Source Inventory ...................... 4-1 4.1 Land Use ..................... ........................ ........................ 4-1 4.2 Contamination Sources ....................... ........................ 4-7 4.3 Identified Needs and Deficiencies ....... ........................ 4-24 5.0 Water Use and Demand .......... ........................ ........................ 5-1 5.1 Domestic Use .............. ........................ ........................ 5-2 5.2 Agricultural Use ......... ........................ ........................ 5-4 5.3 Industrial Use .............. ........................ ........................ 5-16 5.4 Fish and Wildlife Needs ...................... ........................ 5-17 5.5 Recreational Use ......... ........................ ........................ 5-18 5.6 Economic Value of Water ................... ........................ 5-18 North Platte NRD Groundwater Management Plan i OA Project No. 189-92.02 6.0 Identification of Critical Areas for Protection . ........................ 6-1 6.1 Oshkosh Area ............. ........................ ........................ 6-1 6.2 Horseshoe Bend .......... ........................ ........................ 6-1 6.3 Dry Spotted Tail Creek ........................ ........................ 6-3 6.4 Pumpkin Creek Valley ........................ ........................ 6-4 6.5 Harrisburg Area .......... ........................ ........................ 6-5 7.0 Groundwater Goals and Objectives ................. ........................ 7-1 7.1 Objective 1 - Maintenance and Expansion of Baseline Groundwater Data Gathering Program ........ 7-1 7.2 Objective 2 - Emphasize Groundwater Conservation Programs in Cooperation with Other Appropriate Agencies .................... ........................ ........................ 7-2 7.3 Objective 3 - Maintain or Improve Groundwater Quality ....................... ........................ ........................ 7-2 7.4 Objective 4 - Promote Research to Gain Adequate Understanding of Current Areas of Concern to Develop Groundwater Management Policies ............. 7-2 7.5 Objective 5 - Understand the Surface Water/ Groundwater Interaction in the North Platte Valley ........................ ........................ ........................ 7-2 7.6 Objective 6 - Explore Integrated Management and Supply Augmentation Measures ........ ........................ 7-2 7.7 Objective 7 - Develop and Provide Educational Programs to Promote Public Support for and Participation in Management of Groundwater Resources in Cooperation with Appropriate Agencies .................... ........................ ........................ 7-2 7.8 Objective 8 - Obtain Funding for Groundwater Management Programs ....................... ........................ 7-3 8.0 Groundwater Programs and Practices ............. ........................ 8-1 8.1 Objective 1 - Maintenance and Expansion of Baseline Groundwater Data Gathering Program ........ 8-1 8.2 Objective 2 - Emphasize Groundwater Conservation Programs in Cooperation with Other Appropriate Agencies .................... ........................ ........................ 8-4 North Platte NRD Groundwater Management Plan ii OA Project No. 189-92.02 8.3 Objective 3 - Maintain or Improve Groundwater Quality ....................... ........................ ........................ 8-6 8.4 Objective 4 - Promote Research to Gain Adequate Understanding of Current Areas of Concern to Develop Groundwater Management Policies ............. 8-14 8.5 Objective 5 - Understand the Surface Water/ Groundwater Interaction in the North Platte Valley ........................ ........................ ........................ 8-16 8.6 Objective 6 - Explore Integrated Management and Supply Augmentation Measures ........ ........................ 8-17 8.7 Objective 7 - Develop and Provide Educational Programs to Promote Public Support for and Participation in Management of Groundwater Resources in Cooperation with Appropriate Agencies .................... ........................ ........................ 8-18 8.8 Objective 8 - Obtain Funding for Groundwater Management Programs ....................... ........................ 8-21 9.0 Groundwater Management Areas Implementation .................. 9-1 9.1 Legal Background ....... ........................ ........................ 9-1 9.2 Groundwater Management Areas ....... ........................ 9-2 9.3 Establishment of Sub-Areas in the NPNRD ................ 9-4 9.4 Implementation of Controls in Management Areas and Sub-Areas . ........................ ........................ 9-7 9.5 Other Actions .............. ........................ ........................ 9-14 9.6 Relaxation of Controls ........................ ........................ 9-14 10.0 Plan Evaluation and Assessment ..................... ........................ 10-1 10.1 Preliminary Reviews .. ........................ ........................ 10-1 10.2 Future Reviews and Assessments ....... ........................ 10-2 11.0 Appendices 11.1 Summary of Groundwater Management Legislation 11.2 Glossary of Water-Related Terms 11.3 List of Contaminants from EPA Safe Drinking Water Standards 11.4 List of Best Management Practices 11.5 List of References North Platte NRD Groundwater Management Plan iii OA Project No. 189-92.02 12.0 Figures 12-1 North Platte Natural Resources District 12-2 Annual Precipitation at Bridgeport, NE (1900-1992) 12-3 Annual Monthly precipitation at Bridge, NE (1900-1992) 12-4 Average Annual Precipitation 12-5 Land Use/Land Cover 12-6 Principal Aquifers 12-7 Lithologic Characteristics of Stratigraphic Units 12-8 Geologic Cross-Sections Across NPNRD 12-9 Geologic Test Hole Locations 12-10 Configuration of the Water Table, Spring 1979 12-11 Configuration of the Water Table, North Platte River Valley, Spring, 1987 12-12 Specific Yield 12-13 Transmissivity of the Principal Aquifer 12-14 Transmissivity North Platte River Valley 12-15 Configuration of Base of the Principal Aquifer 12-16 Groundwater in Storage 12-17 Saturated Thickness of the Principal Aquifer 12-18 Paleogeography of Chadron Formation 12-19 Depth to Water 12-20 Location of Observation Wells 12-21 USGS 7.5 Minute Topographic Quadrangle Map Index 12-22 Nitrate Concentration 12-23 Nitrates - Oshkosh Area 12-24 Dissolved Solids, Concentration 12-25 Hardness, Calcium Carbonate Concentration 12-26 Calcium, Concentration 12-27 Alkalinity, Concentration 12-28 Sulfate, Concentration 12-29 Geothermal Potential 12-30 Generalized Soils Map, SCS STATGO Associations 12-31 Oil and Gas Wells 12-32 Mineral Operations 12-33 Registered Irrigation Wells North Platte NRD Groundwater Management Plan iv OA Project No. 189-92.02 12-34 Location of Center Pivots 12-35 Surface Water Irrigation Districts 12-36 Groundwater Vulnerability to Contamination, DRASTIC Method 12-37 Possible Groundwater Management Subareas ADDENDUM 13.0 Lisco-Oshkosh-Lewellen Groundwater Management Sub-Area 13-1 13.1 Study Results .............. ........................ ........................ 13-1 13.2 Proposed Boundaries .. ........................ ........................ 13-1 13.3 Controls ...................... ........................ ........................ 13-3 13.4 Additional Triggering Mechanism ...... ........................ 13-5 13.5 Public Input ................. ........................ ........................ 13-6 13.6 Amendment of the Groundwater Management Plan ... 13-6 13.7 Approval by State Agencies ...............