River Conditions
Illustrated map of Lake Lanier

River stage

Roswell, Big Creek

River level
2.72 ft
Status
Below flood stage
7-day change
+0.19 ft
Recent high
7.43 ft
Recent low
2.34 ft

Last reported 2026-10-13 | NWS RWSG1

30-day change
-0.25 ft
Average
2.96 ft
Readings
122
Data span
122 days
Record crest
15.41 ft

In brief

The Big Creek at Roswell, GA read 2.72 ft on Oct 13, 2026, 6.28 ft below action stage. That is 0.25 ft lower than 30 days earlier.

Source: National Weather Service gauge RWSG1

River level timeline

2.12.83.54.35.0SEP 13SEP 18SEP 23SEP 28OCT 03OCT 08OCT 13HIGH 4.72LOW 2.382.76 ftLAST READING

Stage threshold profile

Action stage 9.00 ftMinor flooding 10.00 ftModerate flooding 14.00 ftMajor flooding 17.00 ft CURRENT 2.72 ft

Highest crests on record

RankCrestDate
1 15.41 ft 2009-09-22
2 12.50 ft 2004-09-17
3 12.41 ft 2024-09-27
4 11.38 ft 2018-12-29
5 11.21 ft 2020-10-11
6 11.08 ft 2020-02-07
7 10.99 ft 2020-10-12
8 10.25 ft 2018-11-14

Flood crests recorded at this gauge by the National Weather Service.

What happens at each level

  1. 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. 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.

  3. 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.

  4. 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.

  5. 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.

  6. 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.

Written by the local National Weather Service forecast office for this exact gauge.

Frequently asked questions

Is the Big Creek flooding at Roswell?

No. The Big Creek at Roswell is at 2.72 ft, 6.28 ft below action stage.

What is the flood stage at Roswell?

The National Weather Service sets action stage 9 ft, minor flooding 10 ft, moderate flooding 14 ft and major flooding 17 ft.

What is the highest the Big Creek has been at Roswell?

The highest crest on record is 15.41 ft, on 2009-09-22.

Is the Big Creek high or low right now at Roswell?

At 2.72 ft it is higher than 50% of readings over the last 122 days.

Stage and flood information from the NOAA National Weather Service (gauge RWSG1); daily history from the U.S. Geological Survey (site 02335757). Last reading 2026-10-13. For flood safety decisions always follow official National Weather Service warnings.