MEDIAN FLOW RATE · 30 DAY
30cfs
Optimal band: 37–51 cfs
PERIOD HIGH
59cfs
PERIOD LOW
30cfs
RUNNABLE
73%
last 30 day in band
Precipitation History
Precipitation · YTD
DryDrier than normal
2026 to date
8.5in
-18% vs normal
8.46 in of precipitation so far this year, 18% below the 30-year normal of 10.36 in for this point in the season.
YTD Total
8.5in
This year so far
Normal to Date
10.4in
30-yr average
Typical Range
0.0–17.2in
10th–90th pct YTD
Departure
-18%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 0.68" · normal 0.71" (0.0–1.4)
Feb: 0.86" · normal 0.69" (0.0–1.5)
Mar: 1.14" · normal 1.38" (0.0–2.7)
Apr: 0.96" · normal 2.22" (0.0–4.4)
May: 3.96" · normal 2.98" (0.0–5.7)
Jun: 0.85" · normal 2.33" (0.0–5.4)
Jul: 0.01" (so far)· normal 2.41" (0.0–5.2)
Aug: normal 2.28" (0.0–4.7)
Sep: normal 1.39" (0.0–3.7)
Oct: normal 1.20" (0.0–2.8)
Nov: normal 0.88" (0.0–2.0)
Dec: normal 0.58" (0.0–1.1)
Baseline 1991–2020 · Source: Open-Meteo09:14 AM
Your History · Left Hand Creek Near Boulder, Co.
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Weather Conditions
WEATHER CONDITIONS
TODAY
85°
61°
THU
88°
63°
FRI
94°
62°
SAT
95°
64°
SUN
95°
62°
MON
95°
60°
TUE
92°
61°
FISH INDEX
Temperature
Ideal
Wind
Light
Pressure
Rising — Slow
Moon Phase
Peak Activity
DAYLIGHT
SUNRISE
05:35 AM
SUNSET
08:34 PM
14H 59M OF DAYLIGHT11H 20M REMAINING
MOON PHASE
Full Moon
98% illuminated
PEAK ACTIVITY
Station Location
40.1264, -105.3045Loading map…
DATA · CO DWR · NOAA · NWSUPDATED 2026-07-01 09:14 UTC
Site #LEFCRECO·CO DWR
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