Waterlands
Butte Mill Ditch River
CO DWR · BMLDITCO
BUTTE MILL DITCH RIVER
CO DWR · BMLDITCOLIVE

Butte Mill Ditch

BOULDER COUNTY, CO40.0309°N, -105.2157°W Updated 1 d ago
FLOW RATE
5cfs
AIR TEMP
69°F
WIND
1mph NW
FISH INDEX
81SCORE / 100
GREAT · 4 OF 5
Flow Rate Historical Avg
MEDIAN FLOW RATE · 7 DAY
5cfs
Optimal band: 5–7 cfs
PERIOD HIGH
7cfs
PERIOD LOW
5cfs
RUNNABLE
100%
last 7 day in band
Precipitation History

Precipitation · YTD

Dry

Drier than normal

2026 to date

7.9in

-47% vs normal

7.86 in of precipitation so far this year, 47% below the 30-year normal of 14.74 in for this point in the season.

YTD Total

7.9in

This year so far

Normal to Date

14.7in

30-yr average

Typical Range

10.9–18.0in

10th–90th pct YTD

Departure

-47%

vs 30-yr normal

By Month

This year
Typical range
Normal
Jan: 0.88" · normal 0.94" (0.4–1.7)
Jan
Feb: 0.60" · normal 1.02" (0.3–1.6)
Feb
Mar: 1.60" · normal 1.96" (1.1–3.0)
Mar
Apr: 0.93" · normal 3.02" (1.4–4.4)
Apr
May: 2.97" · normal 3.88" (2.2–5.8)
May
Jun: 0.73" · normal 2.90" (1.2–4.9)
Jun
Jul: 0.15" (so far)· normal 2.78" (1.2–4.3)
Jul
Aug: normal 2.64" (1.2–4.1)
Aug
Sep: normal 2.06" (0.5–3.3)
Sep
Oct: normal 1.82" (0.8–3.0)
Oct
Nov: normal 1.27" (0.7–2.3)
Nov
Dec: normal 0.88" (0.3–1.5)
Dec
Baseline 1991–2020 · Source: Open-Meteo09:21 UTC
Your History · Butte Mill Ditch

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Weather Conditions
WEATHER CONDITIONS
TODAY
99°
64°
TUE
97°
63°
WED
96°
64°
THU
95°
64°
FRI
93°
66°
SAT
96°
66°
SUN
100°
67°
TIME
MON
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
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
1
am
2
am
TEMP
hourly forecast
77°
mild
77°
82°
87°
91°
95°
98°
99°
99°
99°
98°
95°
91°
85°
80°
77°
75°
71°
69°
67°
66°
64°
63°
69°
73°
77°
83°
87°
90°
93°
95°
96°
97°
97°
95°
93°
89°
83°
79°
75°
71°
68°
67°
66°
65°
65°
64°
73°
77°
80°
83°
87°
90°
92°
94°
95°
96°
96°
94°
91°
87°
80°
77°
73°
70°
68°
67°
67°
66°
65°
64°
73°
77°
80°
83°
86°
90°
91°
93°
93°
95°
95°
93°
91°
87°
84°
79°
75°
71°
69°
68°
69°
68°
67°
66°
73°
78°
81°
84°
87°
89°
91°
92°
93°
93°
92°
89°
87°
85°
83°
82°
81°
79°
76°
73°
WIND
mph · gust · dir
5mph NNE
G 6 mph
5
G6
NNE
5
G6
NNE
4
G5
ENE
2
G3
ESE
4
G7
ENE
8
G12
ENE
9
G12
NE
8
G12
ENE
10
G13
ESE
9
G11
ESE
13
G18
ESE
9
G19
SE
7
G13
SSE
2
G8
SE
6
G7
NW
5
NNE
4
G6
N
5
G7
NNW
2
G5
NNW
3
G5
NW
4
G7
NNW
6
G10
NNW
4
G12
NW
8
G14
NNE
7
G11
NNE
7
G8
NNE
7
G8
NE
7
E
6
G7
ENE
10
G11
ENE
8
G10
NNE
9
G10
ENE
11
G13
ENE
8
G10
E
10
G14
ENE
11
G20
SE
6
G17
SE
5
G15
SE
4
G10
WNW
5
G9
SW
5
SW
7
W
7
W
7
W
6
W
5
WSW
3
WSW
4
NE
5
ENE
6
E
9
ESE
10
ESE
9
ESE
8
ESE
8
SE
8
SE
14
ESE
18
ESE
18
SE
16
G24
SE
10
G17
SSE
10
G17
S
7
G8
SW
6
WSW
7
W
8
W
7
W
6
WSW
5
WSW
4
W
2
W
4
NE
6
NE
6
ENE
7
E
8
ESE
9
ESE
8
G9
SE
6
G10
SSE
7
G10
SE
15
SE
19
ESE
19
ESE
16
G23
ESE
18
G28
SE
10
G16
S
7
G9
SW
6
WSW
7
W
6
WNW
6
WNW
6
WNW
5
WNW
5
WNW
4
W
4
G5
NNE
6
NE
6
G8
ENE
9
E
8
ESE
8
SE
9
SE
9
G10
SSE
9
G10
SE
17
SE
13
SSE
11
G14
SSE
9
G15
SE
8
G15
ESE
6
G14
ESE
5
G12
SSE
6
G9
SSW
6
G8
SW
6
G7
W
PRECIP
chance %
0%
0%
0%
0%
0%
0%
1%
1%
1%
1%
2%
3%
3%
3%
1%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
1%
0%
0%
0%
0%
0%
1%
1%
1%
1%
1%
1%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
2%
2%
2%
2%
2%
2%
2%
2%
2%
2%
2%
2%
0%
0%
0%
0%
0%
0%
1%
1%
1%
1%
1%
1%
4%
4%
4%
4%
4%
4%
6%
6%
6%
6%
6%
6%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
10%
10%
10%
10%
10%
10%
9%
9%
9%
9%
9%
9%
1%
1%
CLOUDS
cover %
0%
clear
0%
0%
0%
0%
0%
0%
13%
49%
7%
6%
0%
16%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
10%
0%
5%
5%
0%
5%
5%
0%
0%
5%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
18%
84%
100%
100%
86%
57%
41%
56%
84%
100%
90%
66%
PRESSURE
hPa · trend
846
846848846840846849846844845842841841844842843844846844843
TemperatureWind / GustsPrecipitationCloud coverPressure
Nowscroll →
FISH INDEX
81
Temperature
Warm
Wind
Calm
Pressure
Rising — Slow
Moon Phase
Peak Activity
DAYLIGHT
SUNRISE
05:43 AM
SUNSET
08:29 PM
14H 46M OF DAYLIGHT
MOON PHASE
New Moon
2% illuminated
PEAK ACTIVITY

Station Location

40.0309, -105.2157
Loading map…
DATA · CO DWR · NOAA · NWSUPDATED 2026-07-12 00:00 UTC
Site #BMLDITCO·CO DWR

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