How's the Streamflow For Your Local River?

As we enter the homestretch of summer, Montana’s rivers tell a tale of two states.

While most of Big Sky Country’s major waterways are flowing at normal to above-normal levels, a handful of key streams are significantly below their typical summer volume. Data from 49 U.S. Geological Survey monitoring stations across the state reveal a mixed hydrological picture as of early August.

The standout performer is the Tongue River in eastern Montana, particularly at the dam fed by the Tongue River Reservoir, which has been at or slightly above historic averages this year. It’s the only Montana waterwa...