Waterlands
Saint Vrain Creek
CO DWR · SVCLYOCO
SAINT VRAIN CREEK
CO DWR · SVCLYOCOLIVE

Saint Vrain Creek At Lyons, Co

BOULDER COUNTY, CO40.2180°N, -105.2600°W Updated 1 d ago
FLOW RATE
87.2cfs
AIR TEMP
69°F
WIND
9mph NNW
FISH INDEX
69SCORE / 100
GREAT · 4 OF 5
Flow Rate Historical Avg
MEDIAN FLOW RATE · 1 DAY
87.2cfs
Optimal band: 74–100 cfs
PERIOD HIGH
87.2cfs
PERIOD LOW
87.2cfs
RUNNABLE
100%
last 1 day in band
Precipitation History
Your History · Saint Vrain Creek At Lyons, Co

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Weather Conditions
WEATHER CONDITIONS
TODAY
95°
64°
TUE
91°
67°
WED
94°
64°
THU
96°
58°
FRI
97°
65°
SAT
102°
64°
SUN
101°
65°
TIME
MON
8
NOW
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
TUE
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
WED
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
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
TEMP
hourly forecast
73°
mild
73°
77°
81°
86°
89°
92°
94°
95°
95°
93°
92°
87°
85°
82°
77°
76°
75°
73°
72°
70°
71°
68°
68°
68°
73°
75°
80°
85°
88°
90°
91°
87°
84°
89°
85°
73°
75°
74°
70°
67°
67°
66°
65°
66°
65°
65°
66°
72°
77°
79°
82°
86°
92°
94°
86°
70°
74°
75°
78°
78°
74°
68°
65°
64°
64°
58°
62°
64°
66°
64°
62°
71°
78°
85°
89°
93°
96°
94°
95°
96°
87°
94°
93°
84°
81°
75°
71°
69°
69°
69°
68°
65°
65°
66°
67°
74°
83°
89°
92°
96°
97°
95°
97°
96°
95°
95°
86°
82°
79°
76°
73°
71°
69°
WIND
mph · gust · dir
2mph E
2
E
3
G6
ESE
5
G6
E
4
G6
ENE
6
ENE
8
G13
E
7
G14
ENE
11
G17
NE
9
G11
NE
12
G15
NNE
10
G14
E
11
G17
ENE
8
NNW
4
ENE
10
G11
N
8
NNW
7
WNW
5
WNW
4
G5
NNW
8
G9
NW
2
NE
0
G1
N
2
G3
SSE
1
G2
SSW
3
W
1
G3
ESE
4
G5
ESE
5
G7
ESE
5
G6
ENE
12
G13
E
13
G15
ENE
19
G20
N
15
G21
WNW
5
G7
SSE
5
G13
E
11
G22
S
6
WSW
10
WNW
8
WNW
5
W
6
W
7
NW
6
W
7
W
7
W
7
W
8
W
5
G6
NW
6
NE
6
E
6
ESE
7
ESE
13
ESE
10
G14
ENE
8
NNW
10
G15
SSW
17
E
2
G5
SW
7
G9
SSW
5
G7
SSW
4
NW
7
W
7
WNW
6
W
6
ENE
5
WNW
7
W
6
W
8
WSW
5
WNW
4
NW
4
W
2
G4
N
3
G6
E
6
G13
E
2
G13
SSE
6
G16
NNW
17
G20
NE
2
G15
S
14
G18
SSE
8
G9
SSE
11
G13
ESE
12
SE
11
G16
SE
7
ENE
8
N
7
WNW
8
WNW
8
WNW
8
W
8
W
5
W
6
W
6
W
7
W
6
W
2
G4
WNW
2
G5
ENE
4
G14
ENE
1
G10
ESE
1
G9
NNE
25
NNE
16
N
3
G14
ENE
17
S
7
G10
NNW
21
ESE
16
ESE
7
G9
E
5
N
6
NW
6
WNW
7
WNW
PRECIP
chance %
0%
0%
0%
0%
0%
1%
1%
0%
1%
1%
1%
2%
2%
3%
3%
3%
3%
2%
1%
1%
0%
0%
0%
0%
0%
0%
0%
1%
1%
4%
58%
58%
58%
58%
58%
58%
14%
14%
14%
14%
14%
14%
1%
1%
1%
1%
1%
1%
8%
8%
8%
8%
8%
8%
70%
70%
70%
70%
70%
70%
42%
42%
42%
42%
42%
42%
9%
9%
9%
9%
9%
9%
9%
9%
9%
9%
9%
9%
59%
59%
59%
59%
59%
59%
37%
37%
37%
37%
37%
37%
0%
0%
0%
0%
0%
0%
1%
1%
1%
1%
1%
1%
19%
19%
19%
19%
19%
19%
4%
4%
4%
4%
4%
4%
CLOUDS
cover %
10%
clear
10%
100%
59%
100%
94%
100%
42%
98%
91%
100%
100%
100%
100%
100%
99%
48%
11%
0%
0%
48%
1%
10%
100%
100%
100%
100%
84%
57%
100%
57%
100%
100%
77%
76%
75%
100%
100%
100%
100%
8%
0%
31%
65%
0%
0%
0%
0%
55%
71%
82%
7%
53%
0%
6%
100%
100%
100%
5%
15%
7%
6%
100%
100%
0%
6%
7%
71%
94%
100%
0%
0%
0%
0%
6%
0%
5%
100%
100%
100%
100%
100%
100%
100%
100%
0%
84%
6%
0%
6%
7%
6%
74%
92%
100%
100%
100%
69%
55%
6%
11%
100%
100%
100%
100%
100%
100%
100%
82%
57%
37%
26%
20%
14%
PRESSURE
hPa · trend
838
838843840838839844839839841838838837838835835835838836837
TemperatureWind / GustsPrecipitationCloud coverPressure
Nowscroll →
FISH INDEX
69
Temperature
Warm
Wind
Light
Pressure
Rising — Slow
Moon Phase
Good
DAYLIGHT
SUNRISE
05:38 AM
SUNSET
08:33 PM
14H 55M OF DAYLIGHT
MOON PHASE
Last Quarter
61% illuminated

Station Location

40.2180, -105.2600
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DATA · CO DWR · NOAA · NWSUPDATED 2026-07-05 06:00 UTC
Site #SVCLYOCO·CO DWR

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