| State | River Count | Options |
| Alabama, US | 87 |
summarydrainage summarygauges |
| Alaska, US | 141 |
summarydrainage summarygauges |
| Arizona, US | 41 |
summarydrainage summarygauges |
| Arkansas, US | 165 |
summarydrainage summarygauges |
| British Columbia, CA | 6 |
summarygauges |
| California, US | 338 |
summarydrainage summarygauges |
| Colorado, US | 195 |
summarydrainage summarygauges |
| Connecticut, US | 27 |
summarydrainage summarygauges |
| Delaware, US | 2 |
summarydrainage summarygauges |
| District of Columbia, US | 2 |
summarydrainage summarygauges |
| Florida, US | 6 |
summarydrainage summarygauges |
| Georgia, US | 143 |
summarydrainage summarygauges |
| Goa, IN | 27 |
summarygauges |
| Hawaii, US | 5 |
summarydrainage summarygauges |
| Heredia, CS | 4 |
summarygauges |
| Idaho, US | 173 |
summarydrainage summarygauges |
| Illinois, US | 35 |
summarydrainage summarygauges |
| Indiana, US | 29 |
summarydrainage summarygauges |
| Iowa, US | 15 |
summarydrainage summarygauges |
| Kansas, US | 4 |
summarydrainage summarygauges |
| Kentucky, US | 63 |
summarydrainage summarygauges |
| La Vega, DR | 70 |
summarygauges |
| Louisiana, US | 3 |
summarydrainage summarygauges |
| Maine, US | 204 |
summarydrainage summarygauges |
| Manitoba, CA | 1 |
summarygauges |
| Maryland, US | 76 |
summarydrainage summarygauges |
| Massachusetts, US | 42 |
summarydrainage summarygauges |
| Mexico, MX | 3 |
summarygauges |
| Michigan, US | 88 |
summarydrainage summarygauges |
| Minnesota, US | 61 |
summarydrainage summarygauges |
| Mississippi, US | 3 |
summarydrainage summarygauges |
| Missouri, US | 52 |
summarydrainage summarygauges |
| Montana, US | 88 |
summarydrainage summarygauges |
| Nebraska, US | 4 |
summarydrainage summarygauges |
| Nevada, US | 13 |
summarydrainage summarygauges |
| New Hampshire, US | 99 |
summarydrainage summarygauges |
| New Jersey, US | 21 |
summarydrainage summarygauges |
| New Mexico, US | 41 |
summarydrainage summarygauges |
| New York, US | 348 |
summarydrainage summarygauges |
| North Carolina, US | 219 |
summarydrainage summarygauges |
| North Dakota, US | 3 |
summarydrainage summarygauges |
| Ohio, US | 70 |
summarydrainage summarygauges |
| Oklahoma, US | 26 |
summarydrainage summarygauges |
| Ontario, CA | 4 |
summarygauges |
| Oregon, US | 205 |
summarydrainage summarygauges |
| Pennsylvania, US | 185 |
summarydrainage summarygauges |
| Puerto Rico, US | 11 |
summarydrainage summarygauges |
| Quebec, CA | 18 |
summarygauges |
| Rhode Island, US | 2 |
summarydrainage summarygauges |
| South Carolina, US | 80 |
summarydrainage summarygauges |
| South Dakota, US | 10 |
summarydrainage summarygauges |
| Tennessee, US | 196 |
summarydrainage summarygauges |
| Texas, US | 126 |
summarydrainage summarygauges |
| Utah, US | 65 |
summarydrainage summarygauges |
| Vermont, US | 74 |
summarydrainage summarygauges |
| Virginia, US | 229 |
summarydrainage summarygauges |
| Washington, US | 351 |
summarydrainage summarygauges |
| West Virginia, US | 286 |
summarydrainage summarygauges |
| Wisconsin, US | 165 |
summarydrainage summarygauges |
| Wyoming, US | 76 |
summarydrainage summarygauges |