Snake River Basin: River-Land Use Data
Recent land use GIS data were obtained from the respective state agencies of Idaho, Wyoming, and Oregon and used to identify presently irrigated lands (to see table 5.). Oregon is in the process of converting older data sets to useable GIS files; however, they did provide that portion of the data currently available. There are more areas of agricultural use than shown in Oregon and that data should be available to incorporate into a data set in the near future. Data from Idaho did enable acreage tabulation of the irrigated and non-irrigated lands. See the table below which provides a summary of the distribution of irrigated and non-irrigated acres for HUCs in Idaho.

Teton, Raft, Portneuf, and Blackfoot are those HUCs which contain significant non-irrigated lands with potential for conversion to irrigation. Of the eight HUCs with the largest irrigated acreage, seven are located primarily on the Snake River Plain, see figure below.

Table 5. Summary of Irrigated and Non-Irrigated Acres in Idaho.
Basin Name
HUC
Irrigated Agriculture
Non-irrigated Agriculture
Total Acres
Total Square Miles
   
Acres
Square Miles
Acres
Square Miles
   
UPPER SNAKE-ROCK�
17040212
820, 645
1,282
16,325
26
836,969
1,307
AMERICAN FALLS
17040206
692,858
1,082
182,627
285
875,485
1,368
LAKE WALCOTT
17040209
502,445
785
214,971
336
717,417
1,121
LOWER BOISE �
17050114
472 ,309
738
9,230
14
481,539
752
IDAHO FALLS
17040201
426,891
667
67, 520
105
494,411
772
TETON
17040204
333,784
521
67,774
106
401,558
627
MIDDLE SNAKE-SUCCOR
17050103
269,442
421�
856
1
270,298
422
C. J, STRIKE RESERVOIR
17050101
232,809
364
20,124�
31
252,933
395
LOWER HENRYS
17040203�
182,185�
285�
   
182,185
285
LITTLE WOOD
17040221
170,745
267
170,745
267
MEDICINE LODGE
17040215
161,979
253
161,979
253
CAMAS
17040220
155,545
243
150,545
243
RAFT
17040210
155,020
242
97,321
152
252,341
394
PORTNEUF
17040208
130,687
204
234,609
367
365,296
571
BIG WOOD
17040219
129,927
203
   
129,927
203
PAYETTE
17050122
127,203
199
127,422
199
BIG LOST
17040218
122,620�
192
122,620
192
GOOSE
17040211
114,192
178
114,192
178
BLACKFOOT
17040207
104,811
164
22,630
35
127,442
199
N. FORK� PAYETTE
17050123
100,157
157
   
100,755
157
WEISER
17050124
86,460
135
86,460
135
BEAVER-CAMAS
17040214
85, 826
134
85, 826
134
BRUNEAU
17050102
53,184
99
63,184
99
MIDDLE SNAKE-PAYETTE
17050115
51,294
80
51,294
80
UPPER HENRY'S
17040202
45,700
71
45,700�
71
SALMON FALLS
17040213
38,878
61
38,878
61
UPPER OWYHEE
17050104
35,823
56
35,823
58
LITTLE LOST
17040217
34 ,572
54
34,572
54
PALISADES���
17040104
23,051
36
65,556
102
88,607
138
S. FORK BOISE
17050113
17,907
28
   
17,907
28
JORDAN
17050106
16,995
27
16,995�
27
BROWNLEE RESERVOIR
17050201
14,447
23
14,447
23
BIRCH
17040216
10,163
16
10,163
16
MIDDLE OWYHEE
17050107
7,474
12
7,474
12
MIDDLE FORK PAYETTE
17050121
4,839
8
4,839
8
SALT
17040105
3,587
6
3,587
6
WILLOW
17040205
2,071
3
117,512
184
119,643
187
S. FORK PAYETTE
17050120
1,047
2
   
1,047
2
S. FORK OWYHEE�
17050105
873
1
873
1
E. LITTLE OWYHEE
17050106
654
1
654
1
LOWER OWYHEE
17050110
135
0
135
0
BOISE-MORES
17050112
74
0
74
0
N.& MIDDLE FORK�BOISE
17050111
       
Total:
5,951,908
9,298
1,117,114
1,745
7, 069,022
11, 043

Information supplied by Idaho Water Resource Research Institute, University of Idaho December 1998
Authors: Dr. Gary Johnson, Donna Cosgrove, and Mark Lovell.
Graphics: Sherry Laney and Mark Lovell
All State of Idaho images and graphics created with GIS files obtained through Idaho Department of Water Resources Public Domain GIS unless otherwise noted.
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