Powder/Tongue River Basin Water Plan
Technical Memoranda

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

KEY STORAGE FACILITIES

Reservoir:	HEALY RESERVOIR (or ENL OF 7289R)	Healy Reservoir diversion dam
Date:	27 Feb.2001
Location:	NWSW 3,T51N,R81W
Owner:	Lake DeSmet Energy Co.	Healy Reservoir dam
Year of Construction:	1975
Total Storage:	6500 acre-feet
Active Storage:	5140 acre-feet
Area/Capacity Data:	(Source: Undated table on file with State Engineer's Office, Water Div. II)
	Elev. (ft) Area (acres) Capacity (af) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 4361 68 406 413 420 427 434 441 448 455 462 470 4362 75 477 485 492 500 58 515 523 531 539 547 4363 82 555 563 571 580 588 596 605 613 622 630 4364 89 639 648 657 666 675 684 693 702 711 720 4365 96 730 740 749 759 769 779 789 799 809 819 4366 102 829 840 850 860 871 881 892 903 913 924 4367 109 935 946 957 968 979 990 1002 1013 1024 1036 4368 115 1047 1059 1070 1082 1094 1106 1118 1130 1142 1154 4369 122 1166 1178 1190 1203 1215 1228 1240 1253 1265 1278 4370 128 1291 13043 1317 1330 1343 1356 1369 1382 1396 1409 4371 135 1423 1436 1450 1463 1477 1491 1505 1519 1533 1547 4372 141 1561 1575 1589 1603 1618 1632 1647 1661 1676 1691 4373 148 1705 1720 1735 1750 1765 1780 1795 1810 1826 1841 4374 154 1856 1872 1887 1903 1919 1934 1950 1966 1982 1998 4375 161 2014 2030 2046 2063 2079 2095 2112 2128 2145 2161 4376 167 2178 2195 2212 2229 2245 2262 2280 2297 2314 2331 4377 174 2349 2366 2383 2401 2419 2436 2454 2472 2490 2508 4378 180 2526 2544 2562 2580 2598 2616 2635 2653 2672 2690 4379 187 2709 2728 2747 2765 2784 2803 2822 2841 2860 2880 4380 193 2899 2918 2938 2957 2977 2996 3016 3036 3056 3076 4381 200 3095 3115 3136 3156 3176 3196 3216 3237 2357 3278 4382 206 3298 3319 3340 3360 3381 3402 3423 3444 3465 3487 4383 213 3508 3529 3550 3572 2593 3615 3637 3658 3680 3702 4384 219 3724 3746 3768 3790 3812 3834 3856 3879 3901 3923 4385 226 3946 3969 3991 4014 4037 4060 4083 4106 4129 4152 4386 232 4175 4198 4221 4245 4268 4292 4315 4339 4363 4386 4387 239 4410 4434 4458 4482 4506 4530 4554 4579 4603 4627 4388 245 4652 4676 4701 4726 4750 4775 4800 4825 4850 4875 4389 252 4900 4925 4951 4976 5001 5027 5052 5078 5104 5129 4390 258 5155
Dam Construction Type:	Earth Fill
Outlet:	Healy Reservoir has no gravity-fed outlet. It uses several electric pumps to lift water through a pipeline with a capacity of 200 cfs to Lake DeSmet and another, smaller pipeline with a capacity of 30 cfs to Clear Creek.
End-of-Month Storage Records:	Yes
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) Healy Res 7289R D,I,Ind 04-15-1957 41,974 9-51-081 First Enl. Healy Res. 7290R D,I,Ind 10-14-1957 13,725 31-53-083
	Note: As much as 36,824 af of permit 7289R is appropriated for Lake DeSmet; 5,140 af remain in Healy. Another 2,190 af from permit 7290R are reserved for the use of irrigators downstream of the reservoir on Clear Creek. The remainder of the second permit, 11,545 af, has been transferred to Lake DeSmet.
Designated Use:	Industrial use, stock watering, and irrigation
Recreational Use:	Fishing
Associated Irrigation Diversions:	(Source: Carmine LoGuidice, Div. II water commissioner/hydrographer)
	Diversion Tributary Hillyer & Onslow Clear Creek Frank G. Hopkins Clear Creek L.X. Clear Creek DesMoines Clear Creek Watt Clear Creek Big Bonanza Clear Creek
Associated Industrial Diversions:	Though DeSmet (through Healy rights) stores water for industrial use, none of it is being appropriated.
Operational Discussion:	Healy was constructed as a feeder reservoir for Lake DeSmet, a way of diverting Clear Creek water into DeSmet to supplement the Piney Creek water in anticipation of industrial consumption. As of Feb. 2001, DeSmet has been turned over to three county governments (Sheridan, Johnson, and Campbell).
	Healy's off-channel status on Clear Creek means storage is accomplished by raising the head (closing headgates) in Healy Diversion Dam. Similarly, downstream releases are accomplished by lowering the head at the dam to release flows through the intake pipe. Much of the reservoir's storage lies lower than the level of the intake/outlet pipe. As a result, operators must pump to release water below the level of the pipe.
	Lack of demand for Healy's water and the cost of pumping has kept the owners from exercising their pumps more than rarely to satisfy obligations in Lake DeSmet and to downstream Clear Creek users.
	Releases to irrigators are based on their requests.
	The Clear Creek Diversion Dam (adjoining Healy Reservoir) is also required to allow at least 10 cfs to pass down Clear Creek from Oct. 15 . April 15.
References:	Carmine LoGuidice, water commissioner, State Engineer's Office Water Div. 2, 20 Feb. 2001.
	Healy Area-Capacity Table, from permit application, State Engineer's Office.
	Active Dams, State Engineer's Office Safety of Dams Engineering Div. Database, transmitted by Larry Stockdale, Safety of Dams engineering consultant, 16 Feb. 2001.
	Tabulation of Adjudicated Surface Water Rights of the State of Wyoming, Water Division Number Two, Oct. 1999, database transmitted by Rebecca Mathisen, SEO Technical Services Division administrator, 8 Sept. 2000.

Net Evaporation Loss from Healy Reservoir:

Healy Reservoir End-of-Month
Elevations of Water Surface

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980	4384.7	4384.45	4384.35	4385.8	4385.4	4387	4386.45	4384.25	4383	4384.2	4385.6	4380.8
1981	4375.9	4370.9	4371	4372.6	4370.25	4379.1	4382.6	4381.65	4378.6	4385.9	4382.1	4380.35
1982	4375.3	4372.45	4378.8	4379.75	4385.3	4386	4385.5	4381.5	4380.3	4380.1	4380	4379.85
1983	4379.8	4379.7	4379.7	4379.65	4379.65	4384.1	4384.9	4384.75	4382.4	4382.1	4381.9	4381.7
1984		4381.5	4381.45	4381.35	4381	4376.6	4374	4368.2	4364.8	4367.85	4379.8	4383
1985	4384.35	4385.4	4385.9	4385.6	4385.7	4386	4385.7	4380.4	4376.4	4377.8	4378.35	4378.3
1986	4378.2	4378.2	4378.1	4378.05	4386.15	4386.65	4386.85	4386.05	4385.6	4384.55	4384.5	4384.45
1987	4384.35	4384.25	4384.25	4384.05	4384.85	4385.15	4380.5	4375.1	4370.3	4369.9	4370.9	4374.55
1988	4378	4379	4380.35	4384.55	4387	4386.65	4387.25	4386.15	4384.65	4384.2	4384
1989		4383.8	4383.75	4383.35	4383.25	4383.75	4387.4	4385	4383.35	4383.45	4383.15	4383
1990	4382.7	4382.6	4382.55		4385.35		4385.2	4381.2	4376.3	4375.18
1991	4380.1	4379.96	4380.1	4380.72	4384.6	4386.53		4387.19	4386.13	4385.17	4384.82	4384.7
1992				4384.41	4384.65	4386.14	4386.28	4386.08	4385.95			4385.15
1993	4384.95		4385.39	4385.47		4383.5	4378.5		4375.1	4380.95		4381.8
1994	4381.7		4381.6			4386.65		4386.3	4381.5		4381.25
1995
1996
1997
1998
1999
Historical Ave. Elevation	4380.84	4380.18	4381.24	4381.95	4383.32	4384.56	4383.93	4382.42	4379.63	4380.10	4381.36	4381.47
Corresponding Area (acres)	193	193	200	200	213	219	213	206	187	193	200	200

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Calculations:
Monthly Lewis Evap. (inches)	1.296	1.2	1.872	3.84	5.52	6.288	8.208	7.488	5.52	3.648	1.872	1.248
Monthly Precipitation (inches)	0.75	0.75	0.75	1.75	2.75	2.25	1.25	0.75	1.75	1.25	0.75	0.75
Net Evaporation (inches)	0.546	0.45	1.122	2.09	2.77	4.038	6.958	6.738	3.77	2.398	1.122	0.498	TOTAL
Total Net Evaporation (acre-feet)	9	7	19	35	49	74	124	116	59	39	19	8	556