Rivermatics

USGS Streamgage 09010500

Colorado River below Baker Gulch near Grand Lake, CO

Colorado River below Baker Gulch near Grand Lake, CO is USGS streamgage 09010500 in Colorado, monitoring river discharge in hydrologic subbasin 14010001. It sits on the Colorado River, alongside 30 other gauges Rivermatics tracks on the same river. It drains a watershed of about 64 square miles. Discharge records at this site go back to 1953. Typical flow runs near 75.2 cfs in July and 25 cfs in April, with the higher of the two arriving in July. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead, alongside daily high and low water-temperature forecasts.

View live conditions & forecast →

Gauge details

State
Colorado
Drainage area
64 sq mi
Gauge elevation
8,765 ft
Subbasin (HUC-8)
14010001
Coordinates
40.32583, -105.85611
USGS site number
09010500
Records begin
1953-06-01 (73 years)
Rivermatics forecast
14-day flow outlook + water temperature

14-day flow forecast

Based on observations through for Colorado River below Baker Gulch near Grand Lake, CO. Each day carries a median estimate and the band the model expects the flow to fall within — not a single number to plan against. Forecasts are re-issued daily; see the live screen for the current outlook.

Forecast daily mean discharge in cubic feet per second, by date
Date Low p10 Expected p50 High p90 Range
9.7 10.3 10.9
9.4 10.2 11
9.3 10.3 11.6
9.5 10.8 13.2
9.5 11 13.9
9.9 12.1 17.3
10.7 14 22.6
10.2 13.2 19.6
9.7 12.2 16.7
9.3 11.6 15.5
9 11.3 15.1
8.8 11 14.7
8.5 10.6 14
8.3 10.4 13.9

All values in cubic feet per second (cfs). Estimates only — do not use them for navigation or for any safety, rescue, or emergency decision.

Typical flow by month

Long-term daily discharge percentiles from the USGS record (up to 73 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.

Historical monthly discharge percentiles in cubic feet per second
Month Low p10 Typical p50 High p90 Range
January 5 8.4 12
February 4.8 7.7 10
March 5.2 8.1 12.6
April 10.5 25 59.9
May 70.9 156.2 304.7
June 120.3 272.7 601.4
July 34.3 75.2 215
August 16.3 28.3 54.9
September 13 20.8 43.4
October 11.8 19.3 41
November 8.8 14.2 26
December 6.4 10.2 17

All values in cubic feet per second (cfs).

Common questions

When does Colorado River below Baker Gulch near Grand Lake, CO normally run highest?
June, on the long-term record. The median daily flow that month is about 272.7 cfs, against 7.7 cfs in February, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for Colorado River below Baker Gulch near Grand Lake, CO?
It depends on the month. In January, half of days historically fall near 8.4 cfs, with the middle 80% of days between 5 and 12 cfs. The month-by-month table on this page gives the full range.
How long has Colorado River below Baker Gulch near Grand Lake, CO been measured?
Discharge records at USGS site 09010500 begin in 1953, about 73 years, covering roughly 9,200 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Is there a flow forecast for Colorado River below Baker Gulch near Grand Lake, CO?
Yes. Rivermatics trains a machine-learned model — a temporal-fusion transformer — on this basin's observed flows, weather, and snowpack, and issues a daily flow outlook reaching 14 days ahead: a median estimate inside a confidence band, not a single number to bet on. A companion model forecasts each day's water-temperature high and low. Every forecast is scored against days the model never trained on, and that track record is published on the live gauge screen. Open live conditions to see the current outlook.
Where is Colorado River below Baker Gulch near Grand Lake, CO?
The gauge sits at 40.32583, -105.85611, in Colorado, in hydrologic subbasin 14010001, at an elevation of about 8,765 feet, draining roughly 64 square miles.
Can I use Colorado River below Baker Gulch near Grand Lake, CO data for flood or safety decisions?
No. Rivermatics provides estimates, not guarantees, and the readings and forecasts here may be delayed, inaccurate, or wrong. Do not use them for navigation or for any safety, rescue, or emergency decision. Check the National Weather Service and USGS directly, and use your own judgment.

Upstream and downstream on the Colorado River

Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Colorado River in full.

Other gauges in this subbasin