MetroSouthPlatteInterimBasinWaterSupplyNeedsReport ‎(2)‎

• Basin Roundtable: South Platte
• Additional Roundtables: Metro
• Title: Water Supply & Needs Report for the South Platte and Metro Basins
• Date: 6/1/2006
• Author: CDM, CWCB, DNR
• Basin Roundtables - Doc Type: Needs Assessment Documents

Interim Water Supply and Needs Report for the
South Platte Basin and Denver/South Metro Counties

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4.1.1.3 Maximum Utilization ............................................................................... 4-3
4.2 Specific Tools for Addressing Water Needs.............................................................................. 4-3
4.2.1 Water Storage Rights............................................................................................... 4-3
4.2.2 Conditional Water Rights.......................................................................................... 4-4
4.2.3 Changes of Water Rights .........................................................................................4-4
4.2.4 Leases of Water ....................................................................................................... 4-5
4.2.5 Augmentation Plans ................................................................................................. 4-5
4.2.6 Instream Flows ......................................................................................................... 4-6
4.2.7 New Appropriations.................................................................................................. 4-7
4.2.8 Groundwater Rights................................................................................................. 4-7

4.2.9 Reuse....................................................................................................................... 4-8

4.2.10 Conservation Activities...... ........................... ............................. ........................... .... 4-8
4.3 Interstate Compacts, Equitable Apportionment Decrees, and Memoranda of

Understanding................................................................................................................. .......... 4-9

4.3.1 South Platte River Compact of 1923........................................................................ 4-9
4.3.2 Republican River Compact of 1942.......................................................................... 4-9
4.3.3 Nebraska vs. Wyoming 325 U.S. 665 (1945) and 345 U.S. 981 (1953) ...................4-9
4.3.4 Sand Creek Memorandum of Agreement (1939 and revised 1997) .........................4-9

Section 5 Consumptive Water Supply Needs in the South Platte Basin and

Denver/South Metro Counties

5.1 Overview of Projection Methods.............................. ................................................................. 5-1
5.1.1 Method for Estimating Municipal and Industrial Use ................................................ 5-2
5.1.1.1 Overview of Method for Estimating M&I Use .......................................... 5-2
5.1.1.2 Population Projections............................................................................ 5-3
5.1.1.3 Estimates of Per Capita M&I Water Use................................................. 5-3
5.1.1.4 Self-Supplied Industrial Use.................... ............................................... 5-5
5.1.1.5 Effect of Level 1 Conservation................................................................ 5-5
5.1.1.6 Estimate of M&I CU Rates...................................................................... 5-6
5.1.1.7 Existing Agricultural Demands Method................................................... 5-6
5.1.1.8 Future Agricultural Demands Method .....................................................5-6
5.2 Estimated 2000 and Projected 2030 M&I and SSI Use............................................................. 5-8
5.3 Projected 2030 Agricultural Demand ...................................................................................... 5-11

Section 6 Non-Consumptive Water Supply Needs in the South Platte Basin and

Denver/South Metro Counties

6.1 Concepts for Environmental Flow Management .......................................................................6-1
6.2 Recreational and Environmental Information.............................................................. .............. 6-1
6.2.1 Flow Considerations................................................................................................. 6-1
6.2.2 Water Based Recreation .......................................................................................... 6-5

CONI

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S:\1177\Basin Reports\South Platte\TOC_South Platte. doc