Big Creek below Hog Wallow Creek at Roswell water level

Name: Big Creek below Hog Wallow Creek at Roswell water level (U.S. Geological Survey)
Creator: U.S. Geological Survey
License: https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits

River gauge, Big Creek, Georgia, United States

Directions

Normal for mid-October

Water level

2.45ft Steady over the last 24 hours

Measured Oct 20, 2026, 08:15 PM EDT (24 min ago)

Flow: 33.6 cfs

History

7 days 30 days 1 year Years compared

20252026

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

What this means

Big Creek below Hog Wallow Creek at Roswell is at 2.45 ft, in the normal range for mid-October.

The median for mid-October is 2.62 ft, based on 22 years of readings, so the river stage is 0.17 ft below typical. It is 7.55 ft below the flood stage of 10.00 ft. On the same day last year the reading was 2.31 ft, a difference of +0.14 ft.

It has barely moved over the past 24 hours. In the last month it has stayed between 2.36 ft and 4.33 ft.

Fall is often low-water season on rivers, until steadier rain returns.

Compared with 22 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date: 2.62 ft0.17 ft below the median for this date
Normal for this date: 2.09 ft – 3.36 ft8 years in 10 fall in this range (22 years of records)
Same day last year: 2.31 ft+0.14 ft
Lowest and highest in 30 days: 2.36 ft – 4.33 ft
Lowest and highest in 12 months: 2.23 ft – 7.40 ft
Highest on record: 15.41 ftSeptember 22, 2009

Floating and fishing near Big Creek below Hog Wallow Creek at Roswell

Normal flows mean predictable rapids and good access at most put-ins.

Flood stage here is 10.00 ft, 7.55 ft above the current reading. Beyond it, the National Weather Service also defines moderate and major flood stages.

What happens at each level

17.00 ft: Major flooding begins with widespread inundation of yards along the creek...mainly upstream from the gage. Water up to two feet deep will be over portions of Oxbo Drive. Further downstream...moderate flooding expands into the Big Creek and Azalea parks along Riverside Road and Azalea Drive. If the Roswell gage on the Chattahoochee River is 6 feet or higher...then the combination of flows will cause the access road to the Huntcliff horse stables across from Azalea Park to flood.
15.00 ft: Moderate flooding of yards continues along the creek mainly upstream from the gage. Portions of Oxbo Drive will begin to flood. Further downstream...where the creek merges with the Chattahoochee River...minor flooding continues to expand into the Big Creek and Azalea Parks along Riverside Road and Azalea Drive. If the Roswell gage on the Chattahoochee River is 6.5 feet or higher...then the combination of flows will cause the access road to the Huntcliff horse stables across from Azalea Park to flood.
14.00 ft: Moderate flooding of yards begins along the creek...mainly upstream from the gage off Oxbo Drive. Further downstream...where the creek merges with the Chattahoochee River...minor flooding continues to expand into the Big Creek and Azalea parks...near Roswell Road and along Riverside Road and Azalea Drive. If the Roswell gage on the Chattahoochee River is 7 feet or higher...then the combination of flows will cause the access road to the Huntcliff horse stables across from Azalea Park to flood.
12.00 ft: Minor flooding continues to expand further into the woodlands and grassy areas along the creek upstream and downstream from the gage. Further downstream...where the creek merges with the Chattahoochee River...the Big Creek and Azalea parks near Roswell Road and along Riverside Road and Azalea Drive begin to flood. If the Roswell gage on the Chattahoochee River is 7.5 feet or higher...then the combination of flows will cause the access road to the Huntcliff horse stables across from Azalea Park to flood.
10.00 ft: Flood Stage is reached. Minor flooding of woodlands and grassy areas begin along the creek upstream and downstream from the gage off Oxbo Drive in the Roswell area. Also high water continues to encroach into the Big Creek Park two miles downstream along Roswell Road and Riverside Road. If the Roswell gage on the Chattahoochee River is 8 feet or higher...then the combination of flows will cause the access road to the Huntcliff horse stables across from Azalea Park to begin to flood.
9.00 ft: Bankfull conditions are reached along the creek upstream and downstream from the gage located off Oxbo Drive near the merger of Hog Wallow Creek. Also high water begins to encroach into the Big Creek Park... two miles downstream along Roswell Road and Riverside Road.
2.45 ft: Right now

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

Highest crests on record

Rank	Level	Date
1	15.41 ft	September 22, 2009
2	12.50 ft	September 17, 2004
3	12.41 ft	September 27, 2024
4	11.38 ft	December 29, 2018
5	11.21 ft	October 11, 2020
6	11.08 ft	February 7, 2020
7	10.99 ft	October 12, 2020
8	10.25 ft	November 14, 2018
9	8.14 ft	July 17, 2005

Weather at the gauge

The forecast is not available right now.

Sunrise 07:48 AM Sunset 06:57 PM Daylight 11 hr, 10 min Waxing gibbous 73%

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	+0.07 ft	151 mi
Big Creek at GA 9, near CummingRiver gauge, Big Creek	−0.43 ft	Very low	−0.05 ft	12 mi
Big Creek near AlpharettaRiver gauge, Big Creek	1.67 ft	Low	+0.04 ft	5.3 mi

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Willeo Creek at GA 120, near RoswellRiver gauge, Willeo Creek	0.88 ft	Normal	±0	2.6 mi
Chattahoochee River above RoswellRiver gauge, Chattahoochee River	3.01 ft	Low	+0.17 ft	3.1 mi
Chattahoochee River at Morgan Falls DamReservoir, Chattahoochee River	864.42 ft	Low	−0.20 ft	3.8 mi
Chattahoochee River below Morgan Falls DamRiver gauge, Chattahoochee River	811.30 ft	Low	+0.01 ft	3.9 mi
Crooked Creek near NorcrossRiver gauge, Crooked Creek	3.49 ft	Normal	±0	6 mi
Sewell Mill Creek at GA 120, near MariettaRiver gauge, Sewell Mill Creek	1.06 ft	Low	±0	6 mi
Sope Creek near MariettaRiver gauge, Sope Creek	0.93 ft	Low	+0.04 ft	7 mi
Nancy Creek at Johnson Ferry Road, at ChambleeRiver gauge, Nancy Creek	3.58 ft	Very low	+0.01 ft	8 mi

Questions and answers

Is Big Creek below Hog Wallow Creek at Roswell higher than last year?

Yes, it is 0.14 ft higher than on the same day last year, when the reading was 2.31 ft.

What is flood stage for Big Creek below Hog Wallow Creek at Roswell?

The official flood stage is 10.00 ft. The level is currently 7.55 ft below it.

What is a normal level for Big Creek below Hog Wallow Creek at Roswell in mid-October?

The median for mid-October is 2.62 ft. In 8 years out of 10 the reading falls between 2.09 ft and 3.36 ft, based on 22 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 below Hog Wallow Creek at Roswell today?

On Oct 20, 2026, 08:15 PM EDT, the water level was 2.45 ft. Steady over the last 24 hours.

Is Big Creek below Hog Wallow Creek at Roswell rising or falling?

Steady over the last 24 hours. Down 0.20 ft over the last 7 days.

Is the level of Big Creek below Hog Wallow Creek at Roswell normal?

Normal for mid-October. Compared with 22 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:02335757 (Agency page)
Coordinates: 34.01750, -84.35333 (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

Parameter	Last value	Time (UTC)	Quality
Water level	2.45 ft	2026-10-21 00:15	Provisional
Flow	33.6 cfs	2026-10-21 00:15	Provisional

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How to cite

U.S. Geological Survey: Big Creek below Hog Wallow Creek at Roswell (usgs:02335757). Accessed October 21, 2026 via Nivelmap, https://nivelmap.com/en/united-states/georgia/big-creek-below-hog-wallow-creek-at-roswell

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