Colorado's Plan for Future Depletions

• File Number: 8461.250
• Description: Platte River Water Issues
• State: CO
• Basin: South Platte
• Water Division: 1
• Date: 1/12/1998
• Author: Unknown
• Title: Colorado's Plan for Future Depletions
• Water Supply Pro - Doc Type: Project Overview

Calculations
State of Colorado
South Platte River Basin Municipal Depletion Worksheet Gross M&1 water use, AFlcapita: 0.25
Average M&1 consumptive use: 36%
Enter total new growth here: 209,944 population Average irrigation consumptive use: 45%

Regional assumptions: Northern Central Southern
Percentage of new growth 38% 48% 14% 100%
Regional population growth 79,779 100,773 29,392
New Municipal Water Use, AF/yr 19,945 25,193 7,348
Total New Muni Water Use, AFtyr 52,486

- -- -- -

egional Water Supply "Mix" -

Northern -

Central

outhern

Weighted
Mix
Accretive/
depietive
effects Total
New
Supplies
from this
Source --
Northern
Supplies
from this
Source -
Central
Suppiies
from this
Source Southern
Supplies
from this
Source - -- ----- - --- -
"New" Transbasin Imports 40% 30% 20% 32% 65% 17,005 7,978 7,558 1,470 40% 30% 20% 65%
Nontributary Groundwater 0% 10% 50% 12% 62% 6,193 0 2,519 31674 0% 70% 50% 62°/a
In-basin Agricultural Conversion 35°/a 5% 0% 16% 9°/a 8,240 6,981 1,260 0 35°/a 5°/a 0% 9%
Conservation 5% 15% 10% 11%
-- 0% 5,511 997 3,779 735 5% 15% 10% 0%
--
-
?--
-
-
Water Reuse 10% 25% 10%
-1
----- • --- --
Native South Platte Flow Deveiopment 10% 15% 10% 12% -43%
-- --
-27% 9,028
- - --
6,508 1,994
- - - -
1,994 6,298
-- -- --
3,779 735 10% 25% 10% -43%
--- -- - -
735 10% 15% 10% -27% --
-- _ -- ---
-- - ---- --
------ -
- --
Total
--
- 100% 100°!0
-
- 100%
T 100% 52,486 19,945 25,193 7,348 100°0 100°0 100°0 0%
-----------
--- ------
jan -
-
feb --
?, apr may jun jul aug sep oct nov dec
Monthly Municipal RF Factors 95% 95% 89% 73% 54°/a 51% 47% 50°/a 54% 67% 95% 85% ?
Monthly Municipal CU Factors 5% 5% 11% 27% 46% 49% 53% 50% 46% 33% 5% 5%

Source-Specific Use Pattems jan feb mar apr may jun jul aug sep oct nov dec total
"New" Transbasin lmports - Use Pattern 6°!a 6°fo 5% 6°10 8% 11°10 13°!0 15% 12°!o 8°fo 6°f, 5% 100°!0
Nontributary Groundwater- Use Pattern 3% 3% 4% 7% 12% 13% 16% 15% 11% 8% 5% 4% 700%
In-basin Ag. Conversion - Use Pattern 2% 2% 2% 5% 160/6 169/6 16% 16% 76% 5% 2% 2% 100%
Conservation - Use Pattem 5% 4% 5% 7% 10% 13% 15% 13% 110/6 7% 5% 5% 100%
Water Reuse - Use Pattern 2% 2% . 2% 5% 15% 10% 23% 22% 10% 5% 2% 2°/a 100%
Native S. P. Storage - Diversion Pattern 0% 0% 0% 5% 4051. 500/. 5% 0% 0% 0% 0% 0°/a 100%
Native S. P. Storage - Use Pattern 9% 8% B% 6% 4% 0% 4% 15% 17% 11 °/a 9% 9% 100%

Transit Loss Factors, % per mile 0.02% 0.02% 0.05% 0.10% 0.30°!0 0.45% 0.50% 0.50°!0 0.50% 0.40% .10°!0
0 0.02°0
Transit Loss Factors x 145 miles 3% 3% 7% 15°a 44% 65°, 73% 73% 73% 58% 159/6 3°/,
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