MEDIAN FLOW RATE · 30 DAY
14cfs
Optimal band: 21–29 cfs
PERIOD HIGH
47cfs
PERIOD LOW
14cfs
RUNNABLE
40%
last 30 day in band
Precipitation History
Precipitation · YTD
DryDrier than normal
2026 to date
6.6in
-27% vs normal
6.57 in of precipitation so far this year, 27% below the 30-year normal of 8.95 in for this point in the season.
YTD Total
6.6in
This year so far
Normal to Date
8.9in
30-yr average
Typical Range
5.9–11.5in
10th–90th pct YTD
Departure
-27%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 0.51" · normal 0.85" (0.4–1.6)
Feb: 0.63" · normal 0.95" (0.5–1.3)
Mar: 0.66" · normal 1.37" (0.6–2.5)
Apr: 1.87" · normal 1.91" (0.7–3.2)
May: 2.17" · normal 1.97" (0.7–3.4)
Jun: 0.56" · normal 1.49" (0.4–2.7)
Jul: 0.18" (so far)· normal 2.59" (1.1–4.8)
Aug: normal 2.62" (0.9–4.0)
Sep: normal 1.39" (0.5–2.3)
Oct: normal 1.18" (0.3–2.0)
Nov: normal 0.98" (0.4–1.7)
Dec: normal 0.92" (0.3–1.4)
Baseline 1991–2020 · Source: Open-Meteo11:09 AM
Your History · Chalk Creek At Nathrop
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Station Location
38.7418, -106.0832Loading map…
DATA · CO DWR · NOAA · NWSUPDATED 2026-07-06 00:00 UTC
Site #CHCRNACO·CO DWR
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