Air Quality Alert
None

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.

Chemung River

Last Updated: April 21, 2026

Total streamflow across the Chemung River was last observed at 17,920 cfs, and is expected to yield approximately 35,544 acre-ft of water today; about 155% of normal. River levels are high. Average streamflow for this time of year is 11,553 cfs, with recent peaks last observed on 2014-05-17 when daily discharge volume was observed at 106,400 cfs.

Maximum discharge along the river is currently at the Chemung River At Chemung Ny reporting a streamflow rate of 9,470 cfs. However, the streamgauge with the highest stage along the river is the Chemung River At Corning Ny with a gauge stage of 18.24 ft. This river is monitored from 3 different streamgauging stations along the Chemung River, the highest being situated at an altitude of 916 ft, the Chemung River At Corning Ny.

The Chemung River is a 45-mile-long tributary of the Susquehanna River in New York and Pennsylvania.


15-Day Long Term Forecast


River Details

Last Updated 2026-04-21
Discharge Volume 35,544 ACRE-FT
Streamflow 17,920.0 cfs
Past 24 Hours: -13180.0 cfs (-42.38%)
Percent of Normal 155.11%
Maximum 106,400.0 cfs
2014-05-17
Seasonal Avg 11,553 cfs
       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Chemung River At Corning Ny
USGS 01529950
142 cfs 18.24 ft -11.25
Chemung River At Elmira Ny
USGS 01530332
8450 cfs 4.87 ft -44.41
Chemung River At Chemung Ny
USGS 01531000
9470 cfs 7.56 ft -40.44
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The Chemung River ( shə-MUNG) is a tributary of the Susquehanna River, approximately 46.4 miles (74.7 km) long, in south central New York and northern Pennsylvania in the United States. It drains a mountainous region of the northern Allegheny Plateau in the Southern Tier of New York. The valley of the river has long been an important manufacturing center in the region but has suffered a decline in the late 20th century.