WSP11810

• File Number: 8281.300
• Description: Colorado River Studies and Investigations - Colorado River Consumptive Uses and Losses Report
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 5/1/1975
• Title: Consumptive Uses and Losses in the Arizona Portion of the Upper Colorado River - 1973 Annual Report
• Water Supply Pro - Doc Type: Report/Study

Reservoir

Full
(acres)

ness Net
Factor (acres)

Eleva-
tion
(feet)

Table 7
Reservoir Ev~poration
Water Ye~r 1973
Pan
Evapo-
ration
(inches)
]j

ZlGZ-:O

Surface Are~
Fu11-

Pan
Factor
Jj

Lake
Evapo-
ration
(inches)

Pre-
cipi-
tat ion Runoff
(inches) (inches) (inches)
l..l

Net Evaporation
(acre-
fee t)

(feet)

Irrigation
Many Farme
RoundRock
Marsh Pass
Dennehotso

Others

1,200
80
40
20
38
1,378

*0.5

*0:5

600 5,300 74.4 .685 51.0 9.1 *0.1 42.0 3.50 2,100
40 5,500 73.1 .J5 50.1 15.5 ;'0]1 34.7 2.89 120
20 6,200 68.5 46.9 11.8 35.2 2.93 60
10 5,000 76.4 52.3 13 ,7 38.7 3.22 30
19 (use 3.1) 60
2,370

Fish and l-Jildlife
Pinnacle 15 *1.0 15 7,400 60.6 .685 41.5 21.9 *0.1 19.7 1.64 30
Tsaile 270 *1\0 270 7,000 63.2 I 43.3 21.9 *0)1 21.5 1. 79 480
Wheatfields 275 275 7,300 61.2 .685 41.9 21.9 20.1 1.68 460
560 970
Stock1Jonds (428) .~/ 5,500
Coconino Co. 80 *0.3 24 73.1 .85 62.1 11.8 *0.1 50.4 4.20 lOa
Navaj 0 Co. 40 *oL 12 95,800 71.1 I 60.4 15.1 ] 45.4 3.78 50
Apache Co. 646 194 95,900 70.5 .85 59.9 14.7 *0.1 45.3 3.78 730
766 880
2,704 4,220

*Estimated
1/ Annual pan evaporation = 109.42 - 6.60 (elev./l,OOO).
21 The .685 factor is from Plate 3, Weather Bureau Technical Paper No. 37. The .85 factor is from the PSIAC
pub lication, "StockHater Facilities Guide," March 1962.
3/ Estimated values are averages of surrounding stations. Others are from records of nearby stations.
~/ Average elevation of portion of the county in the Upper Colorado River Basin.