Waterlands
Left Hand Creek
CO DWR · LEFCRECO
LEFT HAND CREEK
CO DWR · LEFCRECOLIVE

Left Hand Creek Near Boulder, Co.

BOULDER COUNTY, CO40.1264°N, -105.3045°W Updated 1 d ago
FLOW RATE
29.6cfs
AIR TEMP
63°F
WIND
5mph WNW
FISH INDEX
81SCORE / 100
GREAT · 4 OF 5
Flow Rate Historical Avg
MEDIAN FLOW RATE · 1 DAY
29.6cfs
Optimal band: 25–34 cfs
PERIOD HIGH
29.6cfs
PERIOD LOW
29.6cfs
RUNNABLE
100%
last 1 day in band
Precipitation History

Precipitation · YTD

Dry

Drier 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)
Jan
Feb: 0.86" · normal 0.69" (0.0–1.5)
Feb
Mar: 1.14" · normal 1.38" (0.0–2.7)
Mar
Apr: 0.96" · normal 2.22" (0.0–4.4)
Apr
May: 3.96" · normal 2.98" (0.0–5.7)
May
Jun: 0.85" · normal 2.33" (0.0–5.4)
Jun
Jul: 0.01" (so far)· normal 2.41" (0.0–5.2)
Jul
Aug: normal 2.28" (0.0–4.7)
Aug
Sep: normal 1.39" (0.0–3.7)
Sep
Oct: normal 1.20" (0.0–2.8)
Oct
Nov: normal 0.88" (0.0–2.0)
Nov
Dec: normal 0.58" (0.0–1.1)
Dec
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°
TIME
WED
9
NOW
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
THU
12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
FRI
12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
SAT
12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
SUN
12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
MON
12
am
1
am
2
am
TEMP
hourly forecast
74°
mild
74°
77°
81°
83°
82°
84°
85°
85°
85°
84°
81°
78°
75°
73°
71°
71°
71°
69°
69°
66°
66°
63°
63°
67°
69°
72°
76°
81°
87°
88°
88°
86°
87°
85°
84°
80°
77°
75°
74°
73°
67°
64°
65°
65°
62°
62°
68°
78°
83°
85°
87°
90°
93°
94°
94°
92°
89°
90°
89°
78°
73°
76°
73°
73°
71°
68°
66°
66°
65°
64°
70°
78°
82°
84°
87°
91°
94°
95°
91°
88°
90°
91°
88°
81°
74°
70°
68°
63°
63°
65°
65°
64°
63°
62°
70°
77°
80°
84°
88°
92°
92°
94°
95°
95°
89°
84°
80°
75°
71°
69°
69°
68°
66°
63°
WIND
mph · gust · dir
5mph S
G 12 mph
5
G12
S
2
G12
S
4
G16
SW
4
G16
SE
13
G23
ESE
15
G27
ESE
12
G20
E
10
G14
E
7
G18
ENE
12
G14
E
5
G8
NE
5
G10
ENE
4
G16
NW
6
G17
WNW
11
WNW
8
G9
WNW
8
WNW
10
WNW
5
WNW
12
WNW
14
G16
WNW
4
N
7
G10
NNW
4
G7
NE
4
G13
E
5
G11
ESE
7
G13
ESE
7
G16
SE
8
G20
WNW
13
G21
W
14
G20
SW
9
G19
ESE
10
G21
SE
14
G16
ESE
2
G3
S
4
N
11
G12
NW
11
WNW
9
WNW
10
G11
W
7
W
7
W
8
W
9
W
8
W
9
W
7
G8
W
4
G7
WSW
7
G8
WSW
5
G9
W
4
G10
W
7
G15
WNW
8
G20
NW
4
G24
S
13
G19
SSE
16
G17
SSE
20
SSE
10
G11
SE
10
SE
3
G7
N
6
W
8
WNW
6
G8
WNW
8
W
8
W
9
WNW
10
W
11
W
11
G12
W
9
W
6
G7
WSW
1
G3
NNE
6
ENE
6
ENE
10
E
11
G15
E
13
G17
E
13
G21
E
17
ESE
6
G14
ENE
15
NNE
14
ESE
11
G15
E
14
G23
NNE
4
WNW
8
WNW
7
G9
WNW
3
G4
W
5
SW
8
WSW
8
W
7
W
7
W
6
WNW
5
G6
WNW
3
E
4
E
6
ESE
9
ESE
13
ESE
15
SE
14
SE
12
SE
12
SE
30
SSE
27
SSE
24
SSE
17
SSE
11
S
6
G9
SSW
7
G9
WSW
9
W
7
WNW
3
WNW
PRECIP
chance %
0%
0%
0%
0%
0%
0%
0%
1%
2%
3%
2%
2%
3%
2%
7%
8%
3%
1%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
2%
2%
2%
2%
2%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
4%
4%
4%
4%
4%
4%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
17%
17%
17%
17%
17%
17%
5%
5%
5%
5%
5%
5%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
17%
17%
17%
17%
17%
17%
4%
4%
4%
4%
4%
4%
1%
1%
CLOUDS
cover %
0%
clear
0%
0%
0%
0%
1%
0%
100%
100%
100%
100%
100%
86%
100%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
100%
100%
100%
100%
66%
100%
100%
100%
79%
100%
100%
100%
100%
100%
75%
7%
7%
0%
0%
9%
100%
60%
35%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
11%
5%
5%
0%
0%
6%
6%
100%
100%
100%
7%
100%
100%
100%
100%
57%
100%
28%
100%
5%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
5%
6%
6%
70%
22%
17%
9%
11%
32%
62%
85%
95%
98%
PRESSURE
hPa · trend
826
826824822822824826823823827823822823827824824824827825826
TemperatureWind / GustsPrecipitationCloud coverPressure
Nowscroll →
FISH INDEX
81
Temperature
Ideal
Wind
Light
Pressure
Rising — Slow
Moon Phase
Peak Activity
DAYLIGHT
SUNRISE
05:35 AM
SUNSET
08:34 PM
14H 59M OF DAYLIGHT11H 11M REMAINING
MOON PHASE
Full Moon
98% illuminated
PEAK ACTIVITY

Station Location

40.1264, -105.3045
Loading map…
DATA · CO DWR · NOAA · NWSUPDATED 2026-07-01 09:23 UTC
Site #LEFCRECO·CO DWR

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