Northeast Wyoming River Basins Water Plan
Technical Memoranda

SUBJECT:	Appendix J Storage Operation and Description TRACT 37
PREPARED BY:	HKM Engineering Inc.
DATE:	March 2002

KEY STORAGE FACILITIES

Reservoir:	TRACT 37
Date:	26 Feb. 2001
Location:	SENW 31,T57N,R66W
Owner:	F. A. BUSH & WYO BOARD OF LAND COMM.
Year of Construction:	1976
Total Storage:	2,454 acre-feet
Active Storage:	1,236.3 acre-feet
Dead Storage:	183.4 acre-feet
Area/Capacity Data:	(Source: Map accompanying permit for Tract 37 Reservoir, on file in SEO Safety of Dams office.)
	Contour Area (acres) Average (acres) Capacity (af) 86 0 Inactive Storage 3.45 17.25 91 6.89 22.07 110.35 96 37.25 61.13 183.375 99 85 Irrigation 101.08 202.15 101 117.15 147.70 738.5 106 178.25 197.125 295.69 107.5 216 Flood Storage 259.125 906.94 111 302.25 Total Available Capacity 2454.26
Dam Construction Type:	Earth Fill
Outlet:	Twenty-four-inch corrugated metal pipe (method of controlling flow not available)
Spillway:	Principal: Sixty-six-inch corrugated metal pipe
End-of-Month Storage Records:	No
Water Rights:	(Source: Tabulation of Adjudicated Surface Water Rights of the State of Wyoming, Water Division Number Two, Oct. 1999)
Reservoir Permit Number Permitted Use Priority Date Volume (af) Headgate Location (S-T-R) Tract 37 7610R I,S 01-02-1974 1252.96 T 37-57-066
Designated Use:	Irrigation, flood control, and stock
Associated Irrigation Diversions:	Information not available.
References:	Map to Accompany Application for Permit, Tract 37 Reservoir, F.A. Bush, Inc., 1974.

Tract 37 Dam cross section (Source: Map to accompany permit for Tract 37 Reservoir, on file with SEO Safety of Dams office, Cheyenne.):

Net evaporative storage loss for Tract 37 Reservoir:

Lewis Annual Evaporation (in.)	41
Total Storage (acre-feet)	2,454

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Average percent of storage	52.1	55.7	63.8	67.0	73.3	74.9	73.5	71.3	69.2	51.6	51.3	51.5
Generated storage (acre-feet)	1278	1366	1565	1643	1800	1837	1803	1750	1699	1265	1259	1263
Corresponding area (acres)	236.7	241.6	252.7	257.0	265.8	267.8	266.0	263.0	260.2	236.0	235.6	235.8
Calculations:
Monthly Lewis Evap. (inches)	1.107	1.025	1.599	3.28	4.715	5.371	7.011	6.396	4.715	3.116	1.599	1.066
Monthly Precipitation (inches)	0.25	0.25	0.75	1.25	2.75	2.75	1.75	1.25	1.25	1.25	0.75	0.75
Net Evaporation (inches)	0.857	0.775	0.849	2.03	1.965	2.621	5.261	5.146	3.465	1.866	0.849	0.316	TOTAL
Total Net Evaporation (acre-feet)	17	16	18	43	44	58	117	113	75	37	17	6	560