Rivermatics

USGS Streamgage 09354500

Los Pinos River at La Boca, CO

Los Pinos River at La Boca, CO is USGS streamgage 09354500 in Colorado, monitoring river discharge in hydrologic subbasin 14080101. It sits on the Los Pinos River, alongside 2 other gauges Rivermatics tracks on the same river. It drains a watershed of about 519 square miles. Discharge records at this site go back to 1951. Typical flow runs near 156.1 cfs in July and 154.4 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.

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Gauge details

State
Colorado
Drainage area
519 sq mi
Gauge elevation
6,150 ft
Subbasin (HUC-8)
14080101
Coordinates
37.00945, -107.59951
USGS site number
09354500
Records begin
1951-01-01 (75 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for Los Pinos River at La Boca, 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
23.2 26.2 29.6
20.6 24.8 31.4
22 29.4 52.7
25.5 42.4 100
30 57.1 154
37.8 77.5 206
40.5 80.7 194
38.7 74.9 158
35 64.5 126
30 52.6 104
27.4 46.4 94.5
48.3 127 628
69.6 164 415
66.6 144 324

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 76 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 21.9 59.7 132.9
February 30.9 71.3 202.2
March 41.7 135.2 576.1
April 29.2 154.4 907.9
May 53.3 155.5 1,091.5
June 82.5 190.7 1,316
July 90.4 156.1 587.3
August 96.6 156.1 338
September 74.4 148.9 351.5
October 39.6 112.9 422.3
November 29.3 64.7 293.6
December 23.9 61.3 187.1

All values in cubic feet per second (cfs).

Common questions

When does Los Pinos River at La Boca, CO normally run highest?
June, on the long-term record. The median daily flow that month is about 190.7 cfs, against 59.7 cfs in January, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for Los Pinos River at La Boca, CO?
It depends on the month. In January, half of days historically fall near 59.7 cfs, with the middle 80% of days between 21.9 and 132.9 cfs. The month-by-month table on this page gives the full range.
How long has Los Pinos River at La Boca, CO been measured?
Discharge records at USGS site 09354500 begin in 1951, about 75 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 Los Pinos River at La Boca, 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. 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 Los Pinos River at La Boca, CO?
The gauge sits at 37.00945, -107.59951, in Colorado, in hydrologic subbasin 14080101, at an elevation of about 6,150 feet, draining roughly 519 square miles.
Can I use Los Pinos River at La Boca, 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 Los Pinos River

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

Other gauges in this subbasin