SNOFLO
 



CLEARWATER RIVER

RIVER LEVELS
April 18, 2025


Winter Weather Advisory
2025-04-19T12:00:00-06:00

* WHAT...Snow expected. Total snow accumulations between 3 and 7 inches. * WHERE...Castle Rock. * WHEN...From 3 PM this afternoon to noon MDT Saturday. * IMPACTS...Snow covered roads could make travel hazardous. The hazardous conditions will impact the Friday evening commute.


Total streamflow across the Clearwater River was last observed at 79,280 cfs, and is expected to yield approximately 157,250 acre-ft of water today; about 120% of normal. Average streamflow for this time of year is 66,139 cfs, with recent peaks last observed on 2022-06-12 when daily discharge volume was observed at 263,553 cfs.

Maximum discharge along the river is currently at the Clearwater River At Spalding Id reporting a streamflow rate of 31,700 cfs. However, the streamgauge with the highest stage along the river is the Clearwater River Nr Peck Id with a gauge stage of 11.32 ft. This river is monitored from 7 different streamgauging stations along the Clearwater River, the highest being situated at an altitude of 3,909 ft, the Clearwater R Ab Trap Cr Nr T Falls.

Last Updated 2025-04-18
Discharge Volume 157,250 ACRE-FT
Streamflow 79,280.0 cfs
+10.0 cfs (+0.01%)
Percent of Normal 119.87%
Maximum 263,553.0 cfs
2022-06-12
Seasonal Avg 66,139 cfs
       
River Streamflow Levels
Created with Highcharts 8.0.0Total River Discharge (cfs)9. Apr10. Apr11. Apr12. Apr13. Apr14. Apr15. Apr16. Apr17. Apr18. Apr050k100k
Seasonal Discharge Comparison
Created with Highcharts 8.0.0Total River Discharge (cfs)1. Jan1. Feb1. Mar1. Apr1. May1. Jun1. Jul1. Aug1. Sep1. Oct1. Nov1. Dec1. Jan0100k200k300k
Maximum Streamflow Discharge
Created with Highcharts 8.0.0YearAnnual Peak Discharge(cfs)2010201120122013201420152016201720182019202020212022202320242025202640k100k200k400k

Weather Forecast

Streamflow Elevation Profile
Created with Highcharts 8.0.0

A clearwater river is classified based on its chemistry, sediments and water colour. Clearwater rivers have a low conductivity, relatively low levels of dissolved solids, typically have a neutral to slightly acidic pH and are very clear with a greenish colour. Clearwater rivers often have fast-flowing sections.The main clearwater rivers are South American and have their source in the Brazilian Plateau or the Guiana Shield. Outside South America the classification is not commonly used, but rivers with clearwater characteristics are found elsewhere.Amazonian rivers fall into three main categories: clearwater, blackwater and whitewater. This classification system was first proposed by Alfred Russel Wallace in 1853 based on water colour, but the types were more clearly defined according to chemistry and physics by Harald Sioli (de) from the 1950s to the 1980s. Although many Amazonian rivers fall clearly into one of these categories, others show a mix of characteristics and may vary depending on season and flood levels.