TABLE B-30.--Waterfowl use by water type, stratum 2, Montana, 1965 
Water type 
(Recorded on 209 
sq. mi. of habitat) 
Times water type 
observed 
Waterfowl 
observed 
Preference rating 
Number 
Percent 
Number 
Percent 
Percent waterfowl r 
Percent water type 
Stock dam: 
Permanent- 
103 
13.6 
326 
14.0 
1.03 
Semi-permanent - 
15 
2.0 
78 
3.3 
1.65 
Temporary- 
26 
3.4 
22 
0.9 
0.26 
Pothole and lake: 
Permanent- 
78 
10.3 
834 
35.7 
3.46 
Semi-permanent - 
37 
4.9 
151 
6.5 
1.33 
Temporary- 
248 
32.8 
650 
27.9 
0. 85 
Stream: 
Permanent- 
96 
12.7 
177 
7.6 
0.60 
Semi-permanent - 
50 
6.6 
46 
1.9 
0.29 
Temporary- 
95 
12.5 
38 
1.6 
0.13 
Dugout: 
Permanent- 
2 
0.2 
6 
0.3 
1. 50 
Semi-permanent - 
3 
0.4 
2 
0.1 
0.25 
Temporary- 
5 
0.6 
4 
0.2 
0.33 
Total -. 
758 
100.0 
2,334 
100.0 
TABLE B-31.—May water Index, Montana, 1965 
Stratum 1 
Stratum 2 
Frequency 
(per sq. mi.) 
Total 
number 
Frequency 
(per sq. mi.) 
Total 
number 
Stock dam — 
1.13 
45, 765 
0. 69 
13,770 
Pothole- 
0. 41 
16, 605 
1.74 
57, 420 
Stream 1- 
1.16 
46, 908 
1.15 
37,950 
Dugout- 
0.03 
1,215 
0.05 
1,650 
Total. 
2. 73 
110,565 
3. 63 
110,790 
1 Of the streams encountered, 0. 60 per square mile in stratum 1 and 0. 70 in 
stratum 2 were of the semi-permanent and temporary variety suitable for 
the construction of stock dams. 
64 
