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Big Creek at GA 9, near Cumming water level

River gauge, Big Creek, Georgia, United States

Directions

Very low for mid-October

Water level

-0.36ft Up 0.08 ft over the last 24 hours

Flow
22.6 cfs
0 5 10 Highest onrecord 10.43 ft Minor floodstage 6.00 ft

History

-0246ftOct 16Oct 17Oct 18Oct 19Oct 21Minor flood stage-0246ftOct 16Oct 18Oct 21Minor flood stage
-0246ftSep 22Sep 29Oct 6Oct 13Oct 21Minor flood stage-0246ftSep 22Oct 6Oct 21Minor flood stage
-0358ftOct 2025Jan 2026Apr 2026Jul 2026Oct 2026Minor flood stage-0358ftOct 2025Apr 2026Oct 2026Minor flood stage
-0358ftJanMarMayJulSepNov2026-0358ftJanAprJulOct2026

20252026

Water level Normal range (10–90 %) Minor flood stage

What this means

Big Creek at GA 9, near Cumming is running far below normal at −0.36 ft.

That puts it 1.16 ft below the median of 0.80 ft for mid-October, based on 17 years of readings. It is 6.36 ft below the flood stage of 6.00 ft. A year ago it stood at −0.61 ft (+0.25 ft).

It has risen 0.08 ft over the past 24 hours. In the last month it has stayed between −0.56 ft and 1.59 ft.

Fall is often low-water season on rivers, and it usually takes a few days of steady rain to change that.

Compared with 17 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date
0.80 ft1.16 ft below the median for this date
Normal for this date
0.35 ft – 1.30 ft8 years in 10 fall in this range (17 years of records)
Same day last year
−0.61 ft+0.25 ft
Lowest and highest in 30 days
−0.56 ft – 1.59 ft
Lowest and highest in 12 months
−0.63 ft – 5.02 ft
Highest on record
10.43 ftSeptember 22, 2009

Floating and fishing near Big Creek at GA 9, near Cumming

Low water exposes gravel bars that make good wading access, but some boat ramps may be left high and dry.

Flood stage here is 6.00 ft, 6.36 ft above the current reading. Beyond it, the National Weather Service also defines moderate and major flood stages.

What happens at each level

14.00 ft
Moderate flooding continues with significant flooding expanding further into the woodlands and pasture near the creek. The sidewalk and boardwalk of the Big Creek Greenway will be completely flooded out with several feet of water. Around two feet of water will be flowing over portions of the Atlanta Highway. This will likely cause a washout of the road near the culvert. The water level will also be reaching the bottom of the bridge on Majors Road.
12.00 ft
Moderate flooding begins with significant flooding expanding further into the woodlands and pasture near the creek. The sidewalk and boardwalk of the Big Creek Greenway will be completely flooded out with several feet of water. The water will begin flowing over portions of the Atlanta Highway. Extensive erosion of the banks near the culvert may cause a washout.
10.00 ft
Minor flooding continues to expand further into the woodlands and pasture near the creek. The sidewalk and boardwalk of the Big Creek Greenway will be completely flooded out. The areas under the Georgia 400 Highway and McFarland Road will be covered with around five feet of water. A portion of the sidewalk under Majors Road will be covered with around six feet of water. Maximum flow will be reached through the culvert at Atlanta Highway and erosion of the banks near the bridge will begin.
8.00 ft
Minor flooding will expand into the natural flood plain of the creek upstream and downstream from the gage at Atlanta Highway or Georgia Highway 9. Most of the sidewalk and boardwalk of the Big Creek Greenway will be under a foot or two of water. The areas under the Georgia 400 Highway and McFarland Road will be covered with around three feet of water. A portion of the sidewalk under Majors Road will be covered with around four feet of water.
7.00 ft
Minor flooding continues to expand into the natural flood plain of the creek upstream and downstream from the gage at Atlanta Highway or Georgia Highway 9. Large portions of the sidewalk and boardwalk of the Big Creek Greenway will be flooded. The areas under the Georgia 400 Highway and McFarland Road will be covered with around two feet of water. A portion of the sidewalk under Majors Road will be covered with around 3 feet of water.
6.00 ft
Flood stage is reached. Minor flooding will expand into the natural flood plain of the creek upstream and downstream from the gage at Atlanta Highway or Georgia Highway 9. Large portions of the sidewalk and boardwalk of the Big Creek Greenway will begin to flood. The areas under the Georgia 400 Highway and McFarland Road will be covered with around one foot of water. A portion of the sidewalk under Majors Road will be covered with around two feet of water.
5.00 ft
Bankfull conditions continue to expand into low lying areas of the creek upstream and downstream from the gage at Atlanta Highway or Georgia Highway 9. Portions of the sidewalk on the Big Creek Greenway under the Georgia 400 Highway and McFarland Road begin to flood. A portion of the sidewalk under Majors Road will be covered with around one foot of water. The water level will begin reaching the bottom of the boardwalk along several sections of the Greenway.
4.00 ft
Bankfull conditions are reached in some low lying areas of the creek upstream and downstream from the gage at Atlanta Highway or Georgia Highway 9. A small portion of the sidewalk on the Big Creek Greenway under Majors Road will begin to flood.
−0.36 ft
Right now

Impact statements from the U.S. National Weather Service.

Highest crests on record

RankLevelDate
110.43 ftSeptember 22, 2009
29.15 ftAugust 1, 2013
39.02 ftOctober 11, 2020
48.86 ftJanuary 4, 2015
58.84 ftJanuary 4, 2023
68.80 ftFebruary 6, 2020
78.76 ftApril 7, 2014
88.54 ftNovember 13, 2018
98.52 ftJanuary 9, 2024
108.47 ftSeptember 27, 2024

Weather at the gauge

The forecast is not available right now.

Sunrise 07:48 AM Sunset 06:57 PM Daylight 11 hr, 9 min Waxing gibbous 74%

Map

Other gauges on Big Creek

Gauge Level Compared with normal 24 hours Distance
Big Creek at Big Creek Road near SaludaRiver gauge, Big Creek 63.92 ft Normal +0.06 ft 143 mi
Big Creek near AlpharettaRiver gauge, Big Creek 1.63 ft Low +0.02 ft 8 mi
Big Creek below Hog Wallow Creek at RoswellRiver gauge, Big Creek 2.43 ft Normal −0.01 ft 12 mi

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Dick Creek at Old Atlanta Road, near SuwaneeRiver gauge, Dick Creek 6.33 ft Very high +0.01 ft 8 mi
Chattahoochee River at Buford Dam, near BufordRiver gauge, Chattahoochee River −0.57 ft Very low ±0 8 mi
Chattahoochee River Buford Dam near BufordRiver gauge, Chattahoochee River Buford Dam 912.14 ft Very low ±0 8 mi
Lake Sidney Lanier near BufordLake, Lake Sidney Lanier 1,063.36 ft Very low −0.05 ft 8 mi
Richland Creek at Suwanee Dam Road, near BufordRiver gauge, Richland Creek 0.58 ft High +0.17 ft 9 mi
Level Creek at Suwanee Dam Road, near SuwaneeRiver gauge, Level Creek 3.60 ft Very high +0.02 ft 9 mi
Chattahoochee R 0.76 Mi Us McGinnis Fy SuwaneeRiver gauge 5.49 ft High −0.15 ft 9 mi
Settingdown Creek near Ball GroundRiver gauge, Settingdown Creek 0.29 ft Very low −0.01 ft 10 mi

Questions and answers

How does Big Creek at GA 9, near Cumming compare with last year?

It is 0.25 ft higher than on the same day last year, when the reading was −0.61 ft.

What is flood stage for Big Creek at GA 9, near Cumming?

The official flood stage is 6.00 ft. The level is currently 6.36 ft below it.

What is a normal level for Big Creek at GA 9, near Cumming in mid-October?

The median for mid-October is 0.80 ft. In 8 years out of 10 the reading falls between 0.35 ft and 1.30 ft, based on 17 years of records.

Is gage height the same as water depth?

No. Gage height is measured from a fixed reference point chosen by the agency, so a reading of 10 ft does not mean the river is 10 ft deep.

What is the water level of Big Creek at GA 9, near Cumming today?

On Oct 20, 2026, 10:45 PM EDT, the water level was −0.36 ft. Up 0.08 ft over the last 24 hours.

Is Big Creek at GA 9, near Cumming rising or falling?

Up 0.08 ft over the last 24 hours. Steady over the last 7 days.

Is the level of Big Creek at GA 9, near Cumming normal?

Very low for mid-October. Compared with 17 years of daily readings for this time of year.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
U.S. Geological Survey
Station code
usgs:02335580 (Agency page)
Coordinates
34.15592, -84.21872 (WGS84)
Vertical datum
NAVD88
Update interval
every 15 minutes
Licence
Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision

Published series

ParameterLast valueTime (UTC)Quality
Water level −0.36 ft 2026-10-21 02:45 Provisional
Flow 22.6 cfs 2026-10-21 02:45 Provisional

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How to cite

U.S. Geological Survey: Big Creek at GA 9, near Cumming (usgs:02335580). Accessed October 21, 2026 via Nivelmap, https://nivelmap.com/en/united-states/georgia/big-creek-at-ga-9-near-cumming

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.

Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer