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The Colorado Department of Public Health and Environment has issued the following... WHAT...Air Quality Health Advisory for Ozone. WHERE...Douglas, Teller, western Elbert, western El Paso and central Arapahoe Counties. Locations include, but are not limited to Castle Rock, Kiowa, Monument, Manitou Springs, and Woodland Park. WHEN...200 PM Tuesday April 21 to 1000 PM Tuesday April 21 IMPACTS...Ozone concentrations could reach the Unhealthy for Sensitive Groups category within the advisory area Tuesday afternoon and evening. Ozone levels will improve overnight Tuesday 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.
Seneca River
Last Updated: April 21, 2026
Maximum discharge along the river is currently at the reporting a streamflow rate of cfs. This is also the highest stage along the Seneca River, with a gauge stage of ft at this location. This river is monitored from 1 different streamgauging stations along the Seneca River, the highest being situated at an altitude of ft, the .
The Seneca River, located in upstate New York, stretches for approximately 61 miles and is a significant tributary of Lake Ontario.
15-Day Long Term Forecast
River Streamflow Levels
| Streamgauge | Streamflow | Gauge Stage | 24hr Change (%) | % Normal | Minimum (cfs) | Maximum (cfs) | Air Temp | Elevation |
|---|---|---|---|---|---|---|---|---|
|
Seneca River (Erie Canal) Near Port Byron Ny
USGS 04235600 |
8640 cfs | 9.15 ft | -0.69 |
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile
The Seneca River flows 61.6 miles (99.1 km) through the Finger Lakes region of Upstate New York in the United States. The main tributary of the Oswego River – the second largest river flowing into Lake Ontario – the Seneca drains 3,468 square miles (8,980 km2) in parts of fourteen New York counties. The Seneca flows generally east, and is wide and deep with a gentle gradient. Much of the river has been channelized to form part of the Erie Canal.
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