Here’s a summary of current snow water supply conditions for Idaho’s 4 River Lottery Rivers. Short on time for complete analysis but this should provide current info about the accumulation of this winter’s unique snowpack and where we are compared to other years.
It’s always good to verify forecasts to better understand what works, and why or why not. This provides a better understanding of the relationship, other climate influencers that may have impacted the outcome and when works best. Following is a summary of Snow2Flow relationships used to predict date of peak flows, range of dates, and if the potential for additional snowmelt peaks has past or is decreasing
Snow & Flow graphs illustrate what happened and how the predictions preformed. 2026 SWE is also include to give you a hint how this winter is tracking these recent years. Next post Idaho’s Four River Lottery – Where’s the Snow and Flow Going in 2026 ?!
Here’s a summary of what happened to last year’s runoff because of near record dry spring. Summer is over and Fall precip is moving with a huge Atmospheric River tail that stretches over 1000 miles to SE Asia. Winter Outlooks for 2025-26 with analog years based on similar ocean conditions; we’ll watch and updated as we progress into winter. For now enjoy the wet weather as we start the new water by building our mountain snowpack.
How low can we go – many headwater rivers are flowing near the bottom 10% tile level for this time of year. Any rain would help…
Here a summary of the Guadalupe River’s massive flood wave moving down river & update for Idaho Rivers – how low can we go. Link to an amazing story about a family’s survival of the flood. https://www.texasmonthly.com/news-politics/texas-flood-firsthand-account/
When you see the Buffalo Fork snowmelt runoff peak happen in the upper Snake River basin, you know the snowmelt runoff season is winding down. Here’s an update with similar recession years to help in monitoring this year’s flow. Projections are made for some rivers if a peak wasn’t happening.
Alphabetical flow graph summary – includes most Idaho rivers across the state and similar runoff years. Short on time to do full analysis but wanted to share.
For MF, Main Salmon, Selway & Lochsa and a few more – Owyhee, Bruneau and Salmon Falls Creek. Enjoy, be safe and keep and eye on the weather and flow levels for changing conditions.
Snow2Flow Update for: MF & Main Salmon Rivers – Selway & Lochsa Rivers and a few more: Owyhee, Camas Creek and Salmon Falls Creek
Snow is melting, rivers are rising, enjoy and be safe. Know your limits.
Snow Weather and Flow 