North Platte Water Supply Update

• File Number: 8461.250
• Description: Water Issues
• State: CO
• Basin: South Platte
• Water Division: 1
• Date: 11/8/2006
• Author: Bureau of Reclamation, Wyoming Area Office
• Title: North Platte Water Supply Update
• Water Supply Pro - Doc Type: Data

NPRAOP V1.1K 21-Mar-2003 Run: 2-Nov-2006 11:45 Page 2
Based on November 2006 Most Probable Sesinoe Infloa Estimatea (April-July 761,400 AF)
NORTH PLATTE RINER OPERATING PLAN
Year Beqinning Nov 2006
Gray Reef Reservoir Operations Initial Content 1.6 Kaf Operatinq Limits: Max 1.1 Kaf, 5327.42 Ft.
------------------------------ Min 0.0 Kaf, 5306.00 Ft.
Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct
------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
Total Infloa kaf 29.3 30.7 30.7 27.8 52.1 81.6 135.7 135.6 140.1 140.1 125.7 30.7
Total Inflow cfa 492. 499. 499. 501. 847. 1371. 2207. 2279. 2279. 2279. 2112. 499.
Total Release kaf 29.8 30.7 30.7 27.8 52.1 81.6 135.7 135.5 140.0 140.0 125.6 30.7
Total Release cfs 501. 499. 499. 501. 847. 1371. 2207. 2277. 2277. 2277. 2111. 499.
Glendo Reservoir Operations initial Content 180.6 Kaf Operating Limita: Max 789.4 Kaf, 4653.00 Ft.
--------------------------- Min 63.2 Kaf, 4570.02 Ft.
Nov Dec Jan Feb Mar Apr May Jun Jul Auq Sep Oct
------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
Alcova-Glendo Gain kaf 4.8 4.3 5.4 12.4 16.2 45.8 56.6 6.5 -2.4 -2.7 8.6 13.9
Infl from Gray Reef kaf 29.8 30.7 30.7 27.8 52.1 81.6 135.7 135.5 140.0 140.0 125.6 30.7
Total Infloa kaf 34.6 35.0 36.1 40.2 68.3 127.4 192.3 142.0 137.6 137.3 134.2 44.6
Total Infloa cfs 581. 569. 587. 724. 1111. 2141. 3127. 2386. 2238. 2233. 2255. 725.
Turbine Release kaf 0.0 0.0 0.0 0.0 0.0 20.6 165.1 168.4 228.3 221.4 146.0 0.0
Low Flow Release kaf 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5
Spillway Release kaf 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Irriqation Release kaf 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 57.4 109.2 0.0 0.0
Total Release kaf 1.5 1.5 1.5 1.5 1.5 22.1 166.6 169.9 287.2 332.1 147.5 1.5
Total Release cfs 25. 24. 24. 27. 24. 371. 2709. 2855. 4671. 5401. 2479. 24.
Evaporation kaf 0.8 0.7 0.7 0.8 1.7 3.1 5.1 6.8 6.5 4.0 1.9 1.0
End-month content kaf 212.7 245.4 279.2 317.0* 382.0* 484.1* 504.8* 470.1 314.0 115.2* 100.0* 141.5
End-month elevation ft 4601.6 4606.2 4610.7 4615.3 4622.5 4632.2 4634.0 4631.0 4615.0 4583.9 4580.3 4589.5
Guernsey Reaervoir Operations Initial Content 6.5 Kaf Operating Limita: Max 45.6 Kaf, 4419.99 Ft.
----------------------------- Min 0.0 Kaf, 4370.00 Ft.
Nov Dec Jan Feb Mar Apr May Jun Jul Auq Sep Oct
------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------ ------
Glendo-Guerns Gain kaf 2.1 1.8 1.3 1.3 0.7 4.6 8.1 3.1 1.9 1.8 5.0 3.5
Inflow from Glendo kaf 1.5 1.5 1.5 1.5 1.5 22.1 166.6 169.9 287.2 332.1 147.5 1.5
Total Inflow kaf 3.6 3.3 2.8 2.8 2.2 26.7 174.7 173.0 289.1 333.9 152.5 5.0
Total Inflow cfs 60. 54. 46. 50. 36. 449. 2841. 2907. 4702. 5430. 2563. 81.
Turbine Release kaf 0.0 0.0 0.0 0.0 0.0 19.4 53.8 51.8 56.5 56.5 56.0 0.0
Seepaqe kaf 0.2 0.3 0.4 0.3 0.3 0.4 0.4 3.0 3.1 0.0 0.2 0.3
Spillooay Release kaf 0.0 0.0 0.0 0.0 0.0 0.0 116.8 117.2 248.4 256.5 122.8 0.0
Total Release kaf 0.2 0.3 0.4 0.3 0.3 19.8 171.0 172.0 308.0 313.0 179.0 0.3
Total Release cfa 3. 5. 7. 5. 5. 333. 2781. 2891. 5009. 5090. 3008. 5.
Evaporation kaf 0.2 0.2 0.2 0.2 0.3 0.5 0.7 1.0 1.1 0.9 0.5 0.1
End-month content kaf 9.7# 12.5 14.7 17.0# 18.6# 25.0* 28.0* 28.0* 8.0* 28.0* 1.0* 5.6
End-month elevation ft 4400.0 4402.4 4404.1 4405.7 4406.7 4410.4 4411.9 4411.9 4398.3 4411.9 4384.1 4395.4