USGS · 07130500

ARKANSAS RIVER

USGS · 07130500LIVE

ARKANSAS RIVER BELOW JOHN MARTIN RESERVOIR, CO.

COLORADO38.0664°N, -102.9324°W Updated 12 hr ago

FLOW RATE

10cfs

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 YEAR

10cfs 45.7% vs avg

Optimal band: 26–35 cfs

PERIOD HIGH

996cfs

PERIOD LOW

1cfs

RUNNABLE

last 1 year in band

Precipitation History

Precipitation · YTD

Dry

Drier than normal

2026 to date

4.6in

-37% vs normal

4.62 in of precipitation so far this year, 37% below the 30-year normal of 7.29 in for this point in the season.

YTD Total

4.6in

This year so far

Normal to Date

7.3in

30-yr average

Typical Range

4.4–10.9in

10th–90th pct YTD

Departure

-37%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 0.74" · normal 0.51" (0.1–0.9)

Jan

Feb: 0.57" · normal 0.52" (0.1–1.0)

Feb

Mar: 0.09" · normal 1.07" (0.3–1.9)

Mar

Apr: 0.31" · normal 1.46" (0.5–2.5)

Apr

May: 1.50" · normal 1.82" (0.5–4.0)

May

Jun: 1.42" · normal 1.64" (0.9–2.6)

Jun

Jul: 0.00" (so far)· normal 1.87" (0.7–3.3)

Jul

Aug: normal 1.74" (0.7–3.3)

Aug

Sep: normal 0.85" (0.2–1.6)

Sep

Oct: normal 1.31" (0.1–3.0)

Oct

Nov: normal 0.60" (0.1–1.2)

Nov

Dec: normal 0.60" (0.1–1.1)

Dec

Baseline 1991–2020 · Source: Open-Meteo11:09 AM

Your History · ARKANSAS RIVER BELOW JOHN MARTIN RESERVOIR, CO.

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Station Location

38.0664, -102.9324

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DATA · USGS · NOAA · NWSUPDATED 2026-07-07 00:00 UTC

Site #07130500·USGS

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