Waterlands
Chattahoochee R 0.47 Mi Ds Ga140, Alpharetta, Ga River
USGS · 02335405
CHATTAHOOCHEE R 0.47 MI DS GA140, ALPHARETTA, GA RIVER
USGS · 02335405LIVE

CHATTAHOOCHEE R 0.47 MI DS GA140, ALPHARETTA, GA

ROSWELL, GA33.9733°N, -84.2700°W
AIR TEMP
80°F
WIND
2mph SE
FISH INDEX
63SCORE / 100
GOOD · 3 OF 5
Flow Rate Historical Avg
MEDIAN FLOW RATE · 1 DAY
cfs
No flow data available
Precipitation History

Precipitation · YTD

Normal

Near-normal year

2026 to date

27.9in

≈ normal

27.86 in of precipitation so far this year — about average for this point in the season (normal 24.9 in).

YTD Total

27.9in

This year so far

Normal to Date

24.9in

30-yr average

Typical Range

18.6–32.1in

10th–90th pct YTD

Departure

+12%

vs 30-yr normal

By Month

This year
Typical range
Normal
Jan: 4.13" · normal 4.62" (2.8–7.2)
Jan
Feb: 3.52" · normal 4.66" (2.0–7.1)
Feb
Mar: 2.79" · normal 4.74" (2.6–7.8)
Mar
Apr: 1.82" · normal 4.05" (2.1–6.4)
Apr
May: 9.65" · normal 3.51" (1.4–5.1)
May
Jun: 5.96" (so far)· normal 4.20" (2.3–7.7)
Jun
Jul: normal 4.38" (2.0–7.2)
Jul
Aug: normal 4.33" (1.9–6.7)
Aug
Sep: normal 3.79" (1.2–6.8)
Sep
Oct: normal 3.39" (1.0–6.4)
Oct
Nov: normal 3.92" (2.2–5.5)
Nov
Dec: normal 4.65" (3.0–6.7)
Dec
Baseline 19912020 · Source: Open-Meteo10:20 PM
Your History · CHATTAHOOCHEE R 0.47 MI DS GA140, ALPHARETTA, GA

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Weather Conditions
WEATHER CONDITIONS
TODAY
83°
65°
FRI
89°
68°
SAT
90°
72°
SUN
93°
73°
MON
96°
73°
TUE
98°
77°
WED
100°
77°
TIME
FRI
12
NOW
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
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9
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12
pm
1
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2
pm
3
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4
pm
5
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6
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7
pm
8
pm
9
pm
10
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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
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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
6
pm
TEMP
hourly forecast
71°
mild
71°
70°
70°
70°
69°
69°
68°
68°
71°
76°
78°
81°
84°
86°
88°
89°
88°
88°
89°
88°
85°
83°
80°
78°
76°
75°
75°
74°
73°
73°
72°
72°
75°
76°
78°
80°
81°
87°
89°
83°
90°
89°
84°
82°
81°
80°
77°
77°
76°
76°
75°
75°
74°
74°
73°
73°
76°
78°
81°
82°
81°
88°
93°
93°
90°
88°
89°
88°
87°
83°
82°
81°
80°
79°
78°
74°
74°
73°
73°
73°
75°
79°
84°
88°
92°
94°
95°
96°
96°
91°
92°
92°
90°
87°
85°
83°
82°
81°
81°
80°
79°
78°
78°
77°
79°
83°
87°
90°
93°
96°
97°
98°
98°
97°
96°
WIND
mph · gust · dir
3mph S
G 10 mph
3
G10
S
2
G8
NE
3
G4
NNE
3
NE
3
ENE
4
ENE
3
G4
ENE
2
G3
E
3
G6
ESE
3
G7
SSE
3
G4
S
3
S
3
G5
S
3
G5
SSW
3
G6
SW
3
G6
WSW
5
G7
WSW
5
G7
SSW
5
G8
SSW
6
G9
SSW
5
G11
S
2
G7
SE
4
G7
SE
5
G13
SSW
5
G13
SW
5
G13
SW
6
G13
SW
6
G13
SSW
6
G15
SW
6
G15
SW
5
G14
SW
5
G13
SW
7
G17
WSW
7
G17
WSW
7
G17
WSW
10
G16
WSW
8
G14
WSW
8
G14
W
12
G13
WNW
9
G12
NW
10
G12
NW
13
G14
NNW
10
G15
NNW
8
G14
NW
5
G9
NNW
3
N
2
G3
NW
2
G3
N
3
G6
SW
4
G5
SSW
2
G5
SW
2
G3
SW
3
G6
WSW
4
G6
W
4
G10
WNW
3
G12
WNW
5
G15
WNW
5
G14
WNW
7
G17
NW
7
G16
NW
6
G11
WNW
6
G12
WNW
8
G12
WNW
10
G13
NW
8
G13
NNW
9
G15
NNW
8
G14
NNW
7
G18
NNW
5
G18
NNW
4
G17
NNW
3
G19
NNW
3
G16
NNW
3
G14
NNW
3
G14
NNW
4
G16
NNW
4
G17
N
4
G15
NNW
4
G12
NNW
4
G9
NNW
4
G6
NNW
4
G5
NNW
4
N
4
N
5
N
6
N
8
N
9
NNW
9
NNW
9
NNW
9
NNW
8
G9
NNW
9
NNW
6
G7
N
4
G5
N
4
G5
NE
4
G7
NE
3
G5
NNE
3
G5
N
3
G16
N
3
G13
NNE
4
G14
NE
4
G11
NE
4
G9
ENE
5
G11
ENE
7
G11
NE
7
G10
ENE
7
G8
ENE
8
E
7
E
7
E
7
E
8
E
9
ESE
10
ESE
10
G12
ESE
PRECIP
chance %
1%
1%
1%
1%
1%
1%
1%
2%
4%
4%
4%
4%
3%
5%
10%
10%
6%
6%
6%
6%
9%
12%
6%
4%
4%
2%
2%
2%
2%
3%
2%
1%
2%
2%
2%
2%
2%
2%
2%
2%
9%
9%
9%
9%
9%
9%
7%
7%
7%
7%
7%
7%
2%
2%
2%
2%
2%
2%
7%
7%
7%
7%
7%
7%
11%
11%
11%
11%
11%
11%
5%
5%
5%
5%
5%
5%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
17%
17%
17%
17%
17%
17%
13%
13%
13%
13%
13%
13%
0%
0%
0%
0%
0%
0%
3%
3%
3%
3%
3%
3%
8%
8%
8%
8%
CLOUDS
cover %
0%
clear
0%
0%
18%
5%
2%
5%
2%
2%
2%
7%
4%
3%
10%
30%
26%
61%
100%
53%
25%
98%
69%
70%
20%
0%
0%
0%
0%
0%
14%
100%
100%
82%
90%
100%
93%
100%
87%
87%
36%
100%
100%
100%
100%
100%
100%
100%
100%
54%
19%
7%
13%
7%
16%
18%
11%
6%
16%
100%
85%
100%
100%
100%
51%
85%
100%
100%
100%
100%
100%
100%
100%
63%
7%
6%
6%
5%
100%
18%
100%
100%
100%
5%
0%
0%
6%
12%
41%
15%
85%
100%
74%
47%
12%
23%
7%
0%
0%
6%
5%
0%
0%
5%
41%
89%
72%
6%
5%
6%
8%
7%
0%
7%
19%
31%
43%
PRESSURE
hPa · trend
984
984985988986986985987983984983985983983983985982984985986984
TemperatureWind / GustsPrecipitationCloud coverPressure
Nowscroll →
FISH INDEX
63
Temperature
Too Hot
Wind
Calm
Pressure
Stable
Moon Phase
Average
DAYLIGHT
SUNRISE
06:27 AM
SUNSET
08:52 PM
14H 25M OF DAYLIGHT20H 52M REMAINING
MOON PHASE
Waxing Gibbous
83% illuminated

Station Location

33.9733, -84.2700
Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-06-26 00:00 UTC
Site #02335405·USGS

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