Waterlands
Green Ditch River
CO DWR · GRNDITCO
GREEN DITCH RIVER
CO DWR · GRNDITCOLIVE

Green Ditch

BOULDER COUNTY, CO40.0363°N, -105.2032°W Updated 1 d ago
FLOW RATE
6.53cfs
Flow Rate Historical Avg
MEDIAN FLOW RATE · 1 DAY
6.53cfs
Optimal band: 68 cfs
PERIOD HIGH
6.53cfs
PERIOD LOW
6.53cfs
RUNNABLE
100%
last 1 day in band
Precipitation History

Precipitation · YTD

Dry

Drier than normal

2026 to date

7.9in

-46% vs normal

7.86 in of precipitation so far this year, 46% below the 30-year normal of 14.67 in for this point in the season.

YTD Total

7.9in

This year so far

Normal to Date

14.7in

30-yr average

Typical Range

10.9–18.0in

10th–90th pct YTD

Departure

-46%

vs 30-yr normal

By Month

This year
Typical range
Normal
Jan: 0.88" · normal 0.94" (0.4–1.7)
Jan
Feb: 0.60" · normal 1.02" (0.3–1.6)
Feb
Mar: 1.60" · normal 1.96" (1.1–3.0)
Mar
Apr: 0.93" · normal 3.02" (1.4–4.4)
Apr
May: 2.97" · normal 3.88" (2.2–5.8)
May
Jun: 0.73" · normal 2.90" (1.2–4.9)
Jun
Jul: 0.15" (so far)· normal 2.78" (1.2–4.3)
Jul
Aug: normal 2.64" (1.2–4.1)
Aug
Sep: normal 2.06" (0.5–3.3)
Sep
Oct: normal 1.82" (0.8–3.0)
Oct
Nov: normal 1.27" (0.7–2.3)
Nov
Dec: normal 0.88" (0.3–1.5)
Dec
Baseline 19912020 · Source: Open-Meteo06:30 UTC
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Station Location

40.0363, -105.2032
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DATA · CO DWR · NOAA · NWSUPDATED 2026-07-11 06:00 UTC
Site #GRNDITCO·CO DWR

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