Communities
There are 12 municipalities in the watershed of which the city of St. James is the largest. Other larger cities include Madelia, Mountain Lake, Truman, Butterfield, Lewisville, Ormsby, Bingham Lake, Darfur, and Odin.
| Cities (Ranked from greatest to lowest pop.) |
Population (Based on 2010 Census) |
County | Acres(mi2) |
| St. James | 4,605 | Watonwan | 2,429 |
| Madelia | 2,308 | Watonwan | 1,471 |
| Mountain Lake | 2,104 | Cottonwood | 1,548 |
| Truman | 1,115 | Martin | 1,089 |
| Butterfield | 586 | Watonwan | 289 |
| Lewisville | 250 | Watonwan | 185 |
| Ormsby | 131 | Martin/Watonwan | 225 |
| Bingham Lake | 126 | Cottonwood | 479 |
| Darfur | 108 | Watonwan | 225 |
| Odin | 106 | Watonwan | 237 |
| La Salle | 87 | Watonwan | 57 |