MEDIAN FLOW RATE · 7 DAY
25cfs
Optimal band: 20–28 cfs
PERIOD HIGH
26cfs
PERIOD LOW
22cfs
RUNNABLE
100%
last 7 day in band
Precipitation History
Precipitation · YTD
DryDrier than normal
2026 to date
6.3in
-23% vs normal
6.33 in of precipitation so far this year, 23% below the 30-year normal of 8.25 in for this point in the season.
YTD Total
6.3in
This year so far
Normal to Date
8.3in
30-yr average
Typical Range
5.0–11.2in
10th–90th pct YTD
Departure
-23%
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: 0.49" (so far)· normal 1.49" (0.4–2.7)
Jul: 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-Meteo10:33 PM
Your History · Chalk Creek At Nathrop
Track your history
Sign in to track your sessions at Chalk Creek At Nathrop — best days, monthly trends, and time on the water.
Sign inSPONSORED
Weather Conditions
WEATHER CONDITIONS
TODAY
79°
55°
FRI
84°
51°
SAT
83°
49°
SUN
84°
46°
MON
79°
45°
TUE
82°
45°
WED
85°
43°
FISH INDEX
Temperature
Warm
Wind
Moderate
Pressure
Stable
Moon Phase
Average
DAYLIGHT
SUNRISE
05:41 AM
SUNSET
08:33 PM
14H 52M OF DAYLIGHT0H 0M REMAINING
MOON PHASE
Waxing Gibbous
82% illuminated
Station Location
38.7418, -106.0832Loading map…
DATA · CO DWR · NOAA · NWSUPDATED 2026-06-25 22:33 UTC
Site #CHCRNACO·CO DWR
Create a free account to save favorites, set flow alerts, and track conditions