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.
Oswegatchie River
Last Updated: April 21, 2026
Total streamflow across the
Oswegatchie River
was last observed at
8,040
cfs, and is expected to yield approximately
15,947
acre-ft of water today; about 177%
of normal.
River levels are high.
Average streamflow for this time of year is
4,536 cfs,
with recent peaks last observed
on
2014-04-15 when daily discharge volume was observed at
16,160 cfs.
Maximum discharge along the river is currently at the
Oswegatchie River Near Heuvelton Ny
reporting a streamflow rate of 6,210 cfs.
This is also the highest stage along the Oswegatchie River, with a gauge stage of
5.33 ft at this location.
This river is monitored from 2 different streamgauging stations along the Oswegatchie River, the highest being situated at an altitude of 1,033 ft, the
Oswegatchie River Near Oswegatchie Ny.
The Oswegatchie River is a 137-mile-long river located in Northern New York that flows from the Adirondack Mountains into the St.
15-Day Long Term Forecast
River Details
| Last Updated | 2026-04-21 |
| Discharge Volume | 15,947 ACRE-FT |
| Streamflow |
8,040.0 cfs
Past 24 Hours: -340.0 cfs (-4.06%) |
| Percent of Normal | 177.24% |
| Maximum |
16,160.0 cfs
2014-04-15 |
| Seasonal Avg | 4,536 cfs |
River Streamflow Levels
| Streamgauge | Streamflow | Gauge Stage | 24hr Change (%) | % Normal | Minimum (cfs) | Maximum (cfs) | Air Temp | Elevation |
|---|---|---|---|---|---|---|---|---|
|
Oswegatchie River Near Oswegatchie Ny
USGS 04262000 |
1830 cfs | 4.77 ft | -21.46 | |||||
|
Oswegatchie River Near Heuvelton Ny
USGS 04263000 |
6210 cfs | 5.33 ft | 2.64 |
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile
The Oswegatchie River is a 137-mile-long (220 km) river in northern New York that flows from the Adirondack Mountains north to the Saint Lawrence River. The Oswegatchie River begins at Partlow Lake in Hamilton County, New York. The river continues through Cranberry Lake which was 'doubled in size' through construction of a dam in the late 1860s. The river continues from the dam to Gouverneur, to near Talcville in St. Lawrence County, where it joins the West Branch. Much of it is within Adirondack State Park. The city of Ogdensburg developed at the mouth of the river at its confluence with the St. Lawrence.
Continue with Snoflo Premium