Evergreen MD 2003 WCPlan

• Project Type: Water Conservation Plan
• Project Name: Evergreen Metropolitan District Water & Wastewater Water Conservation Plan
• Title: Water Conservation Plan
• Date: 5/22/2003
• County: Jefferson
• Water Conservation - Doc Type: Complete Plan

~=======================~========================M===============================================================================

SOUTH PLATTE RIVER BASIN
Streamflow Forecasts - February 1, 2003

~======~=========~=========a========~============================================================================================-
I <<====== Drier ====== Future Conditions Wetter =====>> -
I
Forecast point Forecast I ==================== Chance Of Exceeding ======================
Period I 90% 70% I 50% (Mos,t probable) I 30% 10% I 30-Yr A.vg.
I (1000AF) (1000AF) I (lOOOAF) (% AVG.) I (1000AF) (1000AF) I (1000AP)
====.....==._=.=........==_=======_.==========.======.=======.=====1==========.=.=.========1=.==========================.===.=.=.
tero Reservoir inflow APR-JUL 2.0 3.3 I 4.5 . 35 I 6.2 10.0 13.0
pinney Mountain Reservoir inflow APR-JUL 12.3 17.4 I 22 55 I 28 39 40
levenmile Canyon Reservoir inflow APR-JUL 5.3 15.9 I 23 561 I 30 41 41
Cheesman Lake inflow APR-JUL 31 41 I 49 55 J 59 78 89
outh platte River at South Platte APR-SEP 40 100 I 140 61 I 180 240 230
ear Creek at Morrison APR-SEP 5.6 13.0 I 18,0 58 I 23 '31 31
lear Creek at Golden APR-SEP 49 70 I 85 63 I 100 121 134
t. Vrain Creek at Lyons APR-SEP 25 40 I 50 60 I 60 75 84
oulder Creiak nr Orodell APR-SEP 23 31 I 37 70 I 43 51 53
outh Boulder Creek nr Eldorado Spri APR-SEP 8.9 21 I 30 65 I 39 51 46
ig Thompson River at mouth nr Drake APR-SEP 45 63 I 75 64 I 87 105 117
ache La poudre at Canyon Mouth APR-SEP 62 94 I 115 42 I 166 239 275

SOUTH PLATTE RIVER BASIN
Reservoir Storage (1000 AF) - End of Janua~_

==========.===============~=====s~===.===========================================================================================

SOUTH PLATTE RIVER BASIN
Watershed Snowpack Analysis - February 1, 2003

I
I
==================================-===========================-==================================================================
Usable I *** Usable Stot"age *** I Number This Year as % of
Capacity I This Last I Watershed of ==="'=========="'==
I Year Year Avg I Data Sites Last Yr Average
==========================~============~===-===========================f=========~===============================================
20.0 0.0 20.0 16.4 I BIG THOMPSON BASIN 6 130 70
32.0 15.0 24.8 24.0 I BOULDER CREEK BASIN 5 121 61
8.0 2.1 2.8 3.9 CACHE LA.. POUDRE BASIN 8 130 65
49.0 6.0 20.4 .32.1 I CLEAR CREEK BASIN 4 130 77
10.0 2.2 2.4 7.2 J SAINT VRAIN BASIN 4 107 59
108.9 94.1 77.2 84.6 I UPPER SOUTH PLATTE BASIN 15 142 57
9.0 2.6 3.1 3.0 I TOTAL SOUTH PLATTE BASIN 41 129 63
79.0 48.2 57.8 59.7 [
34.0 2.5 6;9 13.9 I
97.8 44.5 99.6 95.9 I
38.0 15.2 30.3 22.8 I
12.0 5.0 7.1 6.8 1
41.8 17.8 22.5 26.0 I
6.4 2.5 4.3 4.3 I
16.0 1.1 11.9 11.6 I
149.7 15.5 13.4 99.0 I
35.0 24.1 20.0 26.1 I
28.0 15,8 14.7 18.8 I
14.0 8.0 10.3' 8.7 I
9.0 5.9 8.5 6.4 I
6.0 0.5 1.5 4.2 I
10.0 3.3 4.8 5.1 I
13.0 4.8 9.4 12.8 j
24.0 3.0 16.5 15.5 I
70.0 18.9 45.9 57.0 I
33.0 2.3 17.9 19.3 I
63.1 18.0 42.6 41.7 1
48.7 14.5 22.1 33.3 J
42.0 19:8 32.6 33.1 I
8.0 1.4 5.1 5.3 I
13.0 5.6 9,2 10.6 I
19.0 0.4 5.5 10.8 1

LAKE

CREEK

ROCKS

~==~========================================================u=============================================================="'====

90%, 70%, 30%, and 10% chances of exceeding are the probabilities that the actual volume will exceed the volumes in the table.
~e average is computed for the 1971-2000 base period.
(1) _ The values listed under the 10% and 90% Chance of Exceeding are actually 5% and 95% exceedance levels.
~ _ The value is naturalnvo~ume - actual volume may be affected by upstream water management.