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The Colorado Department of Public Health and Environment has issued the following... WHAT...Air Quality Health Advisory for Ozone. WHERE...Clear Creek, Gilpin, Park, Teller, El Paso, Fremont, Elbert and Pueblo Counties. Locations include, but are not limited to Georgetown, Central City, Fairplay, Cripple Creek, Colorado Springs, Canon City, Kiowa and Pueblo. WHEN...200 PM Monday April 20 to 1200 AM Tuesday April 21 IMPACTS...An intrusion of ozone from high in the atmosphere may result in ozone concentrations reaching the Unhealthy for Sensitive groups category within the advisory area Monday afternoon and evening. Ozone levels should gradually decrease overnight Monday night. HEALTH INFORMATION...Public Health Recommendations: Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with lung disease, such as asthma. Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion.
Castor River
Last Updated: April 20, 2026
Maximum discharge along the river is currently at the reporting a streamflow rate of cfs. This is also the highest stage along the Castor River, with a gauge stage of ft at this location. This river is monitored from 1 different streamgauging stations along the Castor River, the highest being situated at an altitude of ft, the .
The Castor River is a 51-mile-long river located in southeastern Missouri.
15-Day Long Term Forecast
River Streamflow Levels
| Streamgauge | Streamflow | Gauge Stage | 24hr Change (%) | % Normal | Minimum (cfs) | Maximum (cfs) | Air Temp | Elevation |
|---|---|---|---|---|---|---|---|---|
|
Castor River At Zalma
USGS 07021000 |
922 cfs | 5.54 ft | 10.02 |
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile
The Castor River is a river in eastern Ontario, in Canada. It flows into the South Nation River near Casselman. It has a number of branches, including the North, Middle, South and East Castor Rivers which join in Embrun. The river was named for the many beaver dams found in its watershed; "castor" means "beaver" in French.
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