Wyoming State Water Plan, Wyoming Water Development Office
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Bear River Basin Water Plan
Technical Memoranda

SUBJECT: Appendix D
Key Structures and Diversions
LEWIS DIVERSION

PREPARED BY: Bear River Basin Planning Team

DATE: August 7, 2000










Diversion Description:The diversion structure consists of a single 60-inch CMP culvert, 
concrete headwall with wings, and a steel slide gate.    



Lewis Headgate





Diversion Location: Diversion is on the Upper Bear in Wyoming.  Irrigated lands are located in 
Wyoming as shown in the location map hereafter.

					

Latitude  	N   41° 03' 15.5"	

Longitude     	W 110° 55'  45.3"





Conveyance Description: Open channel canal, approximately 15,840 feet in length.1


Direct Flow Water Rights:2





Priority Date 
Permit 
Number		
Permitted Use 
Permitted 
Acres		 
Flow 
(CFS)		
Cumulative 
(CFS)		 
Comments


09-23-1888 
Terr
Irrigation 
20
0.29 
0.29 
Morse & Coffman


10-04-1888 
Terr
Irrigation 
360
5.14 
5.43 



04-20-1900 
523E
Irrigation 
460
6.57 
12.00 







Associated Storage Rights:





Reservoir
Shareholder
Volume 
(Acre-ft)		
Est. % of Shares Used this Diversion3
Comments


Whitney
Moe Jackson
123.75
25%



Whitney
Darrell Goodfellow
168.75
50%












click to enlarge



Irrigation Practices:  Land is all flood irrigated.3 



Estimated Diversion Efficiency: Canal losses are relatively high due to porous nature of soils in 
the higher reaches of the Upper Bear.  




Calculated Diversion Efficiency = Conveyance Efficiency X Application Efficiency:



Conveyance Efficiency: 55%


Application Efficiency: 55%


Overall Diversion Efficiency: 30%








Conveyance efficiency is estimated by total length of main canal. Application efficiency 
for flood irrigation and sprinkler irrigation is estimated at 55% and 85% respectively.




Crop Types / Consumptive Use:  Water is used entirely to irrigate meadow grasses, primarily 
Timothy, Meadow Foxtail, etc.3



Return Flows:  Return flow is intercepted by Myers No. 1 Ditch.


The following return flow pattern was adopted for modeling in this study are as follows: 

	
		Month
      (after initial Diversion)	 Percent of Return
		0			70%
		1			20%
		2			10%
		3			 0%
                                       100%



	
	

Other Operational Information:   The Lewis Canal intercepts virtually all of the return flow 
and runoff from the Crown & Pine Grove Canals.  During low flow periods, observed 
runoff has contributed as much as 3 CFS.   The Lewis ditch converges with Mill Creek.  
Irrigation water diverted back out of Mill Creek approximately 1/4 mile downstream.3






References:

    

  1. 	USDA -Soil Conservation Service Economic Research Service-Forest Service in Cooperation 
with the States of Idaho, Utah, Wyoming, Irrigation Conveyance Systems, Working Paper for 
the Bear River Basin Type IV Study, Idaho-Utah-Wyoming, April 1976

    

  2. 	Water rights summary obtained from State Engineer Interstate Reglist - revised April 14, 
1999

    

  3. 	Irrigation practices based on field investigation and interview with Mr. Don Shoemaker, 
Water Hydrographer-Commissioner  -  November 6,1999.

    

  4. 	State of Utah Natural Resources, Water Budget Studies - Utah, Bear River Study Area, 
September 1994.






Monthly Diversion Records

Lewis







YEAR
MAY
JUNE
JULY
AUGUST
SEPTEMBER


Total of Daily Ave for Month
Average
CFS		
Monthly Total
Ac-Ft		
Total of Daily Ave for Month
Average
CFS		
Monthly Total
Ac-Ft		
Total of Daily Ave for Month
Average
CFS		
Monthly Total
Ac-Ft		
Total of Daily Ave for Month
Average
CFS		
Monthly Total
Ac-Ft		
Total of Daily Ave for Month
Average
CFS		
Monthly Total
Ac-Ft


*1970































1971
0
0.0
0.0
0
0.0
0.0
330
10.6
654.5
219
7.1
434.4
100
3.3
198.3


1972
0
0.0
0.0
78
2.6
154.7
310
10.0
614.9
186
6.0
368.9
0
0.0
0.0


1973
140
4.5
277.7
393
13.1
779.5
280
9.0
555.4
142
4.6
281.7
78
2.6
154.7


1974
196
6.3
388.8
374
12.5
741.8
190
6.1
376.9
96
3.1
190.4
73
2.4
144.8


1975
0
0.0
0.0
242
8.1
480.0
228
7.4
452.2
297
9.6
589.1
257
8.6
509.8


1976
0
0.0
0.0
190
6.3
376.9
349
11.3
692.2
139
4.5
275.7
78
2.6
154.7


1977
128
4.1
253.9
208
6.9
412.6
144
4.6
285.6
0
0.0
0.0
3
0.1
6.0


1978
22
0.7
43.6
252
8.4
499.8
216
7.0
428.4
171
5.5
339.2
48
1.6
95.2


1979
36
1.2
71.4
284
9.5
563.3
239
7.7
474.0
180
5.8
357.0
59
2.0
117.0


1980
19
0.6
37.7
129
4.3
255.9
211
6.8
418.5
161
5.2
319.3
35
1.2
69.4


1981
0
0.0
0.0
245
8.2
486.0
168
5.4
333.2
48
1.5
95.2
0
0.0
0.0


1982
1
0.0
2.0
344
11.5
682.3
336
10.8
666.4
114
3.7
226.1
140
4.7
277.7


1983
39
1.3
77.4
41
1.4
81.3
115
3.7
228.1
199
6.4
394.7
144
4.8
285.6


1984
0
0.0
0.0
88
2.9
174.5
232
7.5
460.2
94
3.0
186.4
53
1.8
105.1


1985
80
2.6
158.7
148
4.9
293.6
305
9.8
605.0
282
9.1
559.3
70
2.3
138.8


1986
205
6.6
406.6
405
13.5
803.3
279
9.0
553.4
244
7.9
484.0
78
2.6
154.7


1987
225
7.3
446.3
66
2.2
130.9
282
9.1
559.3
178
5.7
353.1
45
1.5
89.3


1988
45
1.5
89.3
131
4.4
259.8
205
6.6
406.6
22
0.7
43.6
13
0.4
25.8


1989
36
1.2
71.4
186
6.2
368.9
209
6.7
414.5
91
2.9
180.5
16
0.5
31.7


1990
33
1.1
65.5
61
2.0
121.0
234
7.5
464.1
106
3.4
210.2
22
0.7
43.6


1991
0
0.0
0.0
0
0.0
0.0
0
0.0
0.0
0
0.0
0.0
0
0.0
0.0


1992
131
4.2
259.8
178
5.9
353.1
96
3.1
190.4
11
0.4
21.8
12
0.4
23.8


1993
2
0.1
4.0
101
3.4
200.3
210
6.8
416.5
146
4.7
289.6
83
2.8
164.6


1994
88
2.8
174.5
146
4.9
289.6
201
6.5
398.7
31
1.0
61.5
3
0.1
6.0


1995
0
0.0
0.0
131
4.4
259.8
179
5.8
355.0
104
3.4
206.3
65
2.2
128.9


1996
100
3.2
198.3
189
6.3
374.9
89
2.9
176.5
130
4.2
257.9
59
2.0
117.0


1997
19.8
0.6
39.3
137.2
4.6
272.1
96.4
3.1
191.2
117.4
3.8
232.9
155.9
5.2
309.2


1998
40.7
1.3
80.7
188.4
6.3
373.7
274.1
8.0
490.1
126.3
4.1
250.5
32.6
1.1
64.7


1999
7
0.2
13.9
235
7.8
466.1
114
3.7
226.1
70
2.3
138.8
21
0.7
41.7





AVERAGES


1.8
109.0


5.9
353.6


6.8
416.8


4.1
253.4


2.0
119.2



Notes:

*1. No published records are available for this diversion for 1970












To the Bear River Basin Plan Water Plan