Powder/Tongue River Basin Water Plan
Technical Memoranda

SUBJECT:	Appendix J Storage Operation and Description BIG GOOSE PARK
PREPARED BY:	HKM Engineering Inc.
DATE:	March 2002

KEY STORAGE FACILITIES

Reservoir:	BIG GOOSE PARK (or PARK)
Date:	20 Feb. 2001
Location:	NWNW 15,T53N,R86W
Owner:	PARK RESERVOIR COMPANY
Year of Construction:	1933
Enlargement History:	1933, 1958, 1988
Total Storage:	12,500 acre-feet
Active Storage:	10,362 acre-feet
Dead Storage:	588 acre-feet
Area/Capacity Data:	(Source: 1992 table on file with State Engineer's Office, Water Div. II)
	Elevation Area Acre-Ft./ Increment Acre-Ft. Released Acre-Ft. Remaining Ft. Below spillway 8,266.3 356 0.00 10,362 0 454 8,265 343 454 9,908 1.3 318 8,264 333 772 9,590 2.3 318 8,263 323 1,089 9,273 3.3 318 8,262 313 1,407 8,955 4.3 318 8,261 303 1,725 8,638 5.3 318 8,260 293 2,042 8,320 6.3 281 8,259 288 2,323 8,039 7.3 281 8,258 283 2,604 7,758 8.3 281 8,257 279 2,885 7,477 9.3 281 8,256 274 3,166 7,197 10.3 281 8,255 269 3,446 6,916 11.3 251 8,254 262 3,698 6,669 12.3 251 8,253 255 3,949 6,413 13.3 251 8,252 248 4,200 6,162 14.3 251 8,251 241 4,452 5,910 15.3 251 8,250 234 4,703 5,659 16.3 217 8,249 227 4,920 5,442 17.3 217 8.248 221 5,138 5,224 18.3 217 8,247 214 5,355 5,007 19.3 217 8,246 208 5,573 4,790 20.3 217 8,245 201 5,790 4,572 21.3 187 8,244 195 5,977 4,385 22.3 187 8,243 190 6,164 4,198 23.3 187 8,242 184 6,3151 4,011 24.3 187 8,241 178 6,538 3,825 25.3 187 8,240 173 6,725 3,638 26.3 169 8,239 171 6,894 3,468 27.3 169 8,233 170 7,063 3,299 28.3 169 8,237 169 7,232 3,130 29.3 769 8,236 167 7,401 2,961 30.3 169 8,235 166 7,571 2,792 31.3 154 8,234 161 7,724 2,638 32.3 154 8,233 156 7,878 2,484 33.3 154 8,232 152 8,032 2,330 34.3 154 8,231 147 8,186 2,176 35.3 154 8,230 142 8,340 2,022 36.3 130 8,229 137 8,470 1,892 37.3 130 8,228 132 8,600 1,762 38.3 130 8,227 128 8,730 1,632 39.3 130 8,226 123 8,861 1,502 40.3 130 8,225 118 8,991 1,371 41.3 105 8,224 113 9,095 1,267 42.3 105 8,223 107 9,200 1,162 43.3 105 8,222 102 9,305 1,058 44.3 105 8,221 96 9,409 953 45.3 105 8,220 91 9,514 848 46.3 75 8,219 84 9,588 774 47.3 75 8,218 78 9,663 699 48.3 75 8,217 71 9,738 625 49.3 75 8,216 65 9,812 550 50.3 75 8,215 58 9,887 475 51.3 49 8,214 55 9,936 426 52.3 49 8,213 51 9,985 378 53.3 49 8,212 47 10,034 329 54.3 49 8,211 43 10,082 280 55.3 49 8,210 39 10,131 231 56.3 32 8,209 36 10,164 199 57.3 32 8,208 32 10,196 166 58.3 32 8,207 29 10,228 134 59.3 32 8,206 25 10,261 101 60.3 23 8,205 22 10,284 78 61.3 13 8,204 18 10,297 65 62.3 13 8,203 15 10,311 52 63.3 13 8,202 12 10,324 38 64.3 13 8,201 8 10,337 25 65.3 13 8,200 5 10,350 12 66.3 2 8,199 4 10,353 10 67.3 2 8,198 3 10,355 7 68.3 2 8,197 2 10,357 5 69.3 2 8,196 0.95 10,360 2 70.3 2 8,195 0.00 10,362 0.00 71.3
Dam Construction Type:	Earth Fill
Outlet:	60-inch pipe in main dam, 18-inch CMP in east dike that has never been used.
Spillway:	Emergency spillway: concrete, 50 feet wide, seven feet high in main dam
End-of-Month Storage Records:	No
Water Rights:	(Source: 1980 Reservoir Filing Agreement on file in State Engineer's Office, Water Div. II and 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) Big Goose Park Res. 1176R D,I,Mfg, Mun,Power, S 01-07-1908 5055 15-53-086 Enl. Big Goose Park Res 1511R D,I,Mfg, Mun,Power,S 04-01-1909 2292 15-53-086 Enl. Big Goose Park Res 6179R I 10-25-1954 676 15-53-086 Enl. Big Goose Park Res 6448R I 10-30-1957 885 15-53-086 Union No. 1 7227R I 08-19-1958 461.39 15-53-086 Enl. Union No. 1 7228R I 12-18-1959 872.16 15-53-086 Hansen No. 3 7229R I 05-27-1960 120.63 15-53-086 Enl. Hansen No. 3 7230R I 7-12-1960 589.8 15-53-086
	Note: The State Engineer's Office has issued an order eliminating rights in excess of the 10,362-acre- foot active pool. Permit No. 7230R has a volume in excess of the active pool and was transferred into the reservoir in the wake of a resurvey in the mid-1980s (Mike Whitaker, SEO Water Div. II Superintendent, 21 Feb. 2002).
Designated Use:	Irrigation
Recreational Use:	Fishing, driving recreational vehicles on banks in periods of low volume
Associated Irrigation Diversions:	(Source: Bill Knapp, Div. II water commissioner/hydrographer)
	Diversion Tributary P.K. Ditch Big Goose V.A. Hospital Big Goose Goose Canon Ditch Big Goose Alliance Ditch Big Goose Big Goose & Beaver No.s 1 & 2 Rapid Creek Last Chance Ditch Little Goose Peralta Ditch Little Goose Red Hill Ditch Little Goose Muskrat Ditch Little Goose Colorado Colony Ditch Little Goose
	Note: Though diversions closer to the mountains have the only rights to reservoir water, the return flows generated by their stored water use makes it possible for downstream irrigators to satisfy their rights. In this sense, Big Goose Park Reservoir water is supplied to all of the diversions on the Big and Little Goose creeks.
Associated Industrial Diversions:	None (manufacturing permit not in use)
Operational Discussion:	The East Fork of Big Goose Creek flows into Big Goose Park, as does Cross Creek, once it has been released from Cross Creek and Bighorn reservoirs. Park's elevation prohibits releases until well into the irrigation season because the channels in the mountain must be clear of ice.
	The first releases are scheduled in general based on the type of water year.
	First release timing, Big Goose Park Reservoir
	Wet Year Average Year Dry Year 1st week of August 2nd week of July Last week of June
	Diversions end as close to the end of the water year (Oct. 1) as operators can manage. The closure can happen a week early if the operator believes a snowstorm will close access to the reservoir.
	Per the enlargement agreement, 4.5 cfs must be maintained in the E. Fork of Big Goose Creek throughout the season. In addition, 530 acre-feet of the active storage pool is tapped every year to provide a flow of 90 cfs in the same channel during high-flow times. This water is considered part of the water right pool held in active storage and the impact of its release is disbursed among all right holders in the pool.
References:	Bill Knapp, water commissioner, interview, State Engineer's Office, Sheridan, Wyoming, 13 Feb. 2001
	Sue Lowry, telephone conversation, 20 Feb. 2001.
	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.
	Map to Accompany Permit for Enlargement, Park Reservoir Company, 1988.

Cross-section, Park Reservoir Dam (Source: Plat on file in State Engineer's Office, Water Div. II):

Net Evaporation from Park Reservoir:

Lewis Annual Evaporation (in.)	46
Total Storage (acre-feet)	12,500

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Average percent of total storage	56.72	57.55	57.87	60.80	71.16	72.71	68.17	64.03	57.62	57.03	58.79	60.84
Generated storage (acre-feet)	7091	7194	7234	7600	8895	9088	8521	8003	7202	7129	7349	7605
Corresponding area (acres)	269	269	274	279	303	313	293	283	274	269	274	279
Calculations:
Monthly Lewis Evap. (inches)	1.242	1.15	1.794	3.68	5.29	6.026	7.866	7.176	5.29	3.496	1.794	1.196
Monthly Precipitation (inches)	1.75	1.25	2.25	2.75	3.25	2.75	1.75	1.25	2.25	1.75	1.75	1.75
Net Evaporation (inches)	0	0	0	0.93	2.04	3.276	6.116	5.926	3.04	1.746	0.044	0	TOTAL
Total Net Evaporation (acre-feet)	0	0	0	22	52	85	149	140	69	39	1	0	557