Radar Loops and Forecasts
National Weather Service Radar Loop
Hydrology
Garrison ID: garr
Snowpack – Yellowstone and Missouri
- Montana SNOTEL Snow/Precipitation Update Report
- Montana SNOTEL Precipitation Update Report
- Montana SNOTEL Precipitation Summary Update Report
- Montana SNOTEL Snowpack Update Report
- Montana SNOTEL Snowpack Timing Update Report
- Montana SNOTEL Precipitation Comparison (2021) Update Report
- Montana SNOTEL Precipitation Comparison (2011) Update Report [FLOOD YEAR]
- Montana SNOTEL Snowpack Comparison (2021) Update Report
- Montana SNOTEL Snowpack Comparison (2011) Update Report [FLOOD YEAR]
- Montana Snow Survey
- Missouri River Basin – Mountain Snowpack Water Content
- USACE Water Management Snowpack
Yellowstone River Near Sidney, MT
USACE Omaha District Recreation Homepage
Lake Sakakawea Records
Latest Freeze Over Date: January 24, 2024
Based on the measurements, the lake froze over on Sunday, January 24, 2024 — the latest freeze date ever recorded for the lake, thanks to the mild winter so far.
Length of Days Frozen (Least): 69 days from January 18 – March 27, 2012
Earliest Ice Free Date: March 27, 2012
Bismarck Data
Burnt Creek Model Water Flow (PDF)
Missouri 8 April 2009 (PDF)