Table 3.--Distribution of potholes, by size and by type, Waubay st area 
Size class 
(acres) 
Of type 
Of type 
Of type 
Of type 


| Type la | Type Ib | Type 3 | Type 4 | Type 5 
Total | Num-| Total | Num-|Total | Num-|Total | Num-| Total 
area | ber area j|ber | area be ea | ber | area 
8} 19 0 2 
t 
OF oJ 
19 |151.4 | 12 1106.8 
11 | 306.8 
Type la Type lb Type 3 Type 4 Type 5 All types 
‘Average size of potholes (acres) 0.3 0.4 0.9 5.2 134 2.7 
Average number per square mile 6.2 9.2 8.5 7:9 2.9 34.7 
Average acreage per square mile 2.2 3.6 8.1 40.9 39.3 94.1 
Percentage of total number 17.9 26.4 oh 6 22.7 8.4 100.0 
Percentage of total acreage 2.2 3.8 8.6 43.6 41.8 100.0 
By types: 
Of type la areas: 78 percent are 0.0 to 0.3 acres. 
0] 
lb areas: 74 percent are 0.1 to 0.9 acres. 
3 areas: 64 percent are 0.4 to 1.9 acres. 
2.0 
0 
h areas: 57 percent are to 11.9 acres. 
5 areas: 70 percent are 5.0 or more acres. 
9 acre areas: 92 percent are types le and 1b. 
acre areas: 75 percent are types la and 1b. 
acre areas: 74 percent are types lb and 3. 
acre areas: 65 percent are type 4. 
acre areas: 100 percent are types 4 and 5. 
acre areas: 95 percent are types 4 and 5. 
0,0 
0-3 
0.9 
~1.9 acre areas: 80 percent are types 3 and 4. 
4.9 
11.9 
15 
