Western Flows

Grand Lake Outlet

Below Chipmunk Ln At Grand Lk, CO Stream Gauge USGS: 09014050 Provisional Data Last Updated: May 26, 09:44 PM PT

Current Flow

69.5 cfs
Rising

Water Temp

58.1 °F
Safe (< 65°F)

Expected Weather

Temp --°F
Wind -- mph
Rain Chance --%
Pressure -- hPa

Location

Flow is within the typical range for this time of year (25th–75th percentile, based on 15 years of USGS record).

System Insights

  • Flow has risen more than 99% in the past 4 hours. Conditions are changing rapidly at this location.

  • Flow is already rising rapidly with precipitation forecast in the next 48 hours (43% chance). Further rises are possible.

Verify access, permits, and local conditions before entering any waterway.

Today's Weather

Forecast Details

Morning

At 6 AM: 43°F and Mainly Clear, wind N at 3 mph. By 10 AM: 59°F and Partly Cloudy, wind SW at 7 mph.

Afternoon/Evening

At 2 PM: 59°F and Overcast, wind E at 14 mph. By 6 PM: 55°F and Overcast, wind NW at 5 mph.

Overnight

Dropping from 49°F at 10 PM to 44°F by 4 AM. Conditions Overcast with wind N at 6 mph.

3-Day Outlook

🌔 Waxing Gibbous

Today, May 26

🌧️

62° / 43°

Chance of Rain: 43%
5:38 AM 8:22 PM

Wednesday, May 27

🌧️

57° / 43°

Chance of Rain: 35%
5:38 AM 8:22 PM

Thursday, May 28

🌧️

69° / 42°

Chance of Rain: 47%
5:37 AM 8:23 PM

Flow Trend & 7-Day Forecast

Source: USGS

The current cfs of 70 CFS is running below the historical median of 227 CFS for this date, indicating lower-than-average seasonal water levels.

Current (CFS)
7-Day Forecast
Historical Median
Normal Range (p25–p75)

7-Day Water Temperature (°F)

Source: USGS
Current (°F)
Historical Median
68°F Threshold

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Glossary & Methodology

Cubic Feet per Second (CFS)

The standard measure for streamflow. One CFS is equal to one cubic foot of water flowing past a specific point in one second (about 7.48 gallons).

Acre-Foot (AF)

The volume of water needed to cover one acre of land to a depth of one foot. One acre-foot is exactly 325,851 gallons.

Snow Water Equivalent (SWE)

The amount of water contained within the snowpack. It can be thought of as the depth of water that would theoretically result if you melted the entire snowpack instantaneously.

Data Sources

Live metrics and historical medians are aggregated directly from the US Geological Survey (USGS), California Data Exchange Center (CDEC), and National Resources Conservation Service (NRCS). Daily flow statistics represent provisional records and are subject to agency revision.