Waterlands
Arkansas River
CO DWR · CHCRNACO
ARKANSAS RIVER
CO DWR · CHCRNACOLIVE

Chalk Creek At Nathrop

CHAFFEE COUNTY, CO38.7418°N, -106.0832°W Updated 2 d ago
FLOW RATE
25cfs
AIR TEMP
78°F
WIND
11mph W
FISH INDEX
63SCORE / 100
GOOD · 3 OF 5
Flow Rate Historical Avg
MEDIAN FLOW RATE · 30 DAY
25cfs
Optimal band: 3648 cfs
PERIOD HIGH
59cfs
PERIOD LOW
22cfs
RUNNABLE
31%
last 30 day in band
Precipitation History

Precipitation · YTD

Dry

Drier 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)
Jan
Feb: 0.63" · normal 0.95" (0.5–1.3)
Feb
Mar: 0.66" · normal 1.37" (0.6–2.5)
Mar
Apr: 1.87" · normal 1.91" (0.7–3.2)
Apr
May: 2.17" · normal 1.97" (0.7–3.4)
May
Jun: 0.49" (so far)· normal 1.49" (0.4–2.7)
Jun
Jul: normal 2.59" (1.1–4.8)
Jul
Aug: normal 2.62" (0.9–4.0)
Aug
Sep: normal 1.39" (0.5–2.3)
Sep
Oct: normal 1.18" (0.3–2.0)
Oct
Nov: normal 0.98" (0.4–1.7)
Nov
Dec: normal 0.92" (0.3–1.4)
Dec
Baseline 19912020 · 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 in
SPONSORED
Weather Conditions
WEATHER CONDITIONS
TODAY
79°
55°
FRI
84°
51°
SAT
83°
49°
SUN
86°
44°
MON
79°
46°
TUE
81°
42°
WED
84°
45°
TIME
FRI
12
NOW
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
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
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
TEMP
hourly forecast
61°
mild
61°
60°
58°
56°
54°
52°
51°
55°
61°
66°
72°
75°
77°
82°
80°
84°
69°
73°
73°
64°
57°
56°
55°
55°
53°
53°
52°
52°
51°
51°
49°
53°
57°
64°
70°
74°
78°
81°
82°
83°
82°
81°
79°
76°
70°
59°
58°
55°
53°
51°
49°
48°
46°
44°
44°
53°
60°
68°
74°
77°
80°
83°
84°
86°
83°
81°
79°
77°
71°
58°
55°
54°
51°
49°
48°
47°
46°
46°
46°
53°
61°
68°
71°
73°
76°
77°
78°
79°
78°
77°
75°
73°
65°
54°
50°
48°
45°
45°
44°
44°
43°
42°
43°
53°
59°
65°
71°
76°
79°
81°
81°
80°
80°
79°
WIND
mph · gust · dir
5mph SW
5
SW
4
G11
SSE
9
G19
SSW
13
G20
SSW
4
G14
SE
4
G7
ENE
4
NE
2
G5
WNW
5
G8
SSE
5
G10
SSE
3
G11
SE
3
G14
SE
11
G15
W
14
G16
WSW
7
G16
NNE
20
G23
WSW
38
G55
WSW
12
G18
WSW
22
G28
NNW
26
G37
N
16
G22
N
14
G30
NNW
7
G10
S
5
SSE
5
G6
SW
1
G3
ESE
4
G7
SE
1
G5
ENE
2
G8
N
2
G10
ESE
5
N
4
G5
NW
3
G13
S
12
G21
S
14
G33
SW
16
G36
WSW
23
G37
WSW
24
G38
SW
27
G37
WSW
27
G38
SW
24
G35
WSW
22
G34
WSW
20
G33
WSW
16
G31
WSW
11
G20
WSW
6
G8
SSW
8
G9
S
7
G8
SSW
6
SW
6
WSW
6
SW
5
G6
SSW
5
SW
4
G5
WSW
3
G4
SW
3
G4
SSE
6
G11
SSE
9
G20
S
16
G28
SSW
16
G29
SSW
15
G31
SSW
19
G33
SSW
16
G32
SW
20
G32
SW
24
G32
SW
23
G32
SW
21
G30
SW
17
G29
SW
12
G28
SW
5
G13
SSW
5
G7
SW
6
W
5
W
4
WSW
4
G5
WSW
3
G5
SW
4
SSW
5
SSW
5
SSW
4
S
7
G16
S
14
G29
SSW
18
G27
SW
18
G23
SW
23
WSW
20
G21
WSW
19
G22
W
20
G21
W
20
G22
W
19
G20
W
18
G19
W
16
G17
WNW
8
G17
WNW
7
WNW
6
W
5
W
3
G4
W
4
WNW
4
NW
4
NW
4
NW
2
G3
WNW
2
G3
NNW
2
G7
NNE
1
G13
ESE
5
G18
SE
10
G23
S
13
G27
S
13
G30
S
12
G32
SSW
10
G32
SW
11
G31
WSW
11
G29
WSW
11
G26
SW
PRECIP
chance %
2%
2%
4%
2%
1%
1%
1%
0%
0%
0%
0%
0%
0%
0%
0%
1%
1%
3%
5%
10%
9%
20%
18%
34%
22%
7%
2%
2%
2%
2%
1%
6%
0%
0%
0%
0%
0%
0%
1%
1%
1%
1%
1%
1%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
3%
3%
3%
3%
3%
3%
1%
1%
1%
1%
1%
1%
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%
2%
2%
2%
2%
2%
CLOUDS
cover %
70%
mostly
70%
95%
61%
93%
100%
3%
15%
38%
1%
0%
1%
8%
100%
27%
42%
100%
100%
100%
100%
100%
94%
100%
100%
100%
100%
50%
100%
100%
84%
0%
0%
0%
0%
0%
0%
50%
13%
6%
6%
87%
100%
74%
11%
69%
8%
5%
0%
0%
0%
0%
0%
5%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
6%
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%
6%
35%
75%
100%
96%
79%
PRESSURE
hPa · trend
770
770768772771769765766763761760765763761762768765763764769
TemperatureWind / GustsPrecipitationCloud coverPressure
Nowscroll →
FISH INDEX
63
Temperature
Warm
Wind
Moderate
Pressure
Stable
Moon Phase
Average
DAYLIGHT
SUNRISE
05:41 AM
SUNSET
08:33 PM
14H 52M OF DAYLIGHT20H 19M REMAINING
MOON PHASE
Waxing Gibbous
83% illuminated

Station Location

38.7418, -106.0832
Loading map…
DATA · CO DWR · NOAA · NWSUPDATED 2026-06-26 00:14 UTC
Site #CHCRNACO·CO DWR

Create a free account to save favorites, set flow alerts, and track conditions