Chattahoochee River at Roswell
Georgia · Tubing & floating
Measured at USGS 02335450 — CHATTAHOOCHEE RIVER ABOVE ROSWELL, GA · NWS forecast point RWLG1
Reading taken Jul 28, 11:00 PM UTC
Low and slow — expect to drag in the shallows
At 714 CFS, this gauge is running 46% of normal for late July — below the 1,550 CFS median USGS has recorded for this date across 50 years of record (1976–2026).
Data-derived guidance from USGS and NWS published values — not official advice, and not a safety assessment.
Sponsor Chattahoochee River
Put your outfitter, guide service, cabin rental or shuttle in front of everyone checking this stretch before they drive out. One exclusive sponsor per river.
Cancel anytime · Questions?
Flood stages at Roswell
Official National Weather Service categories for gauge RWLG1, issued by WFO FFC. Impact statements are the NWS's own wording for this location, reproduced verbatim.
-
Major flood 17.0 ft
- 17.0 ft Major flooding begins. The Fulton County Water Pollution Control Facility will flood between 17 and 17.5 feet. Eves Road begins to flood. Numerous homes are flooded along Riverside Road and Old Riverside Road.
- 20.0 ft Extensive flooding of many homes and businesses will result on Riverside Road. Sections of Riverside Road will be under water.
-
Moderate flood 13.0 ft
- 13.0 ft Moderate flooding begins. Extensive flooding of yards...walkways...access roads and some homes develop along parts of Riverside Road...Old Riverside Road and Azalea Drive by the river. Water floods the tennis courts at the Huntcliff Club...the swimming pool and lower portions of the club house. Water is four feet deep over the road leading to the horse stables which are flooded with up to two feet of water. The water level is around one half foot below the gage house which may affect the stage readings.
- 14.0 ft Moderate flooding expands of yards...walkways...access roads and some homes along portions of Riverside Road...Old Riverside Road and Azalea Drive. The tennis courts at the Huntcliff Club...the swimming pool and lower portions of the club house are flooded. Water is around three feet deep in the horse stables. The water level floods the gage house and automated stage readings are unlikely.
-
Minor flood 9.0 ft
- 9.0 ft Flood stage is reached. The water reaches the bottom of the Ace Sand Company office and begins to flood the parking lot of Don White Memorial Park on Riverside Road...and the parking lot at the Azalea Park on Azalea Drive west of Roswell Road. Water will approach the tennis courts at the Huntcliff Club across from Azalea Park and begin to flood the road leading to the horse stables. The storm drains will no longer function properly at Riverside Road and Northcliff Trace.
- 10.0 ft Minor flooding continues. The water is one foot deep in the Ace Sand Company office and begins to flood a warehouse. Flooding expands into the parkings lots of Don White Memorial Park on Riverside Road...and the Azalea Park on Azalea Drive west of Roswell Road. Water begins to flood the tennis courts at the Huntcliff Club across from Azalea Park and is one foot deep over the road leading to the horse stables. The storm drains will stop functioning at Riverside Road and Northcliff Trace.
- 11.0 ft Minor flooding continues with water two feet deep in the Ace Sand Company office and a warehouse. Flooding expands into the parking lots of Don White Memorial Park on Riverside Road...and the Azalea Park on Azalea Drive west of Roswell Road. Water floods the tennis courts at the Huntcliff Club and is two feet deep over the road leading to the horse stables and approaches the north end of the stables. The storm drains stop functioning at Riverside Road and Northcliff Trace and the road begins to flood.
- 12.0 ft Minor flooding expands with water three feet deep in the Ace Sand Company office and a warehouse. Water covers the parking lots of Don White Memorial Park and the Azalea Park. Water floods the tennis courts at the Huntcliff Club and approaches the swimming pool. The water is three feet deep over the road leading to the horse stables which begin to flood. Riverside Road at Northcliff Trace is flooded with one foot of water. These conditions occurred in September 2009.
-
Action 8.0 ft
- 8.0 ft The river begins to come out of its banks in low lying areas...especially near the Ace Sand Company. The river level reaches the boardwalk and fishing pier at the Don White Memorial Park under Georgia Highway 400...two miles downstream from the gage. It also reaches the top of the boat ramp at the Azalea Park on Azalea Drive west of Georgia Highway 9.
- Right now 2.86 ft
12 months of flow at Roswell
Daily values from USGS gauge 02335450. Provisional data, subject to revision.
Highest crests on record at Roswell
| Stage | Flow | Date |
|---|---|---|
| 11.96 ft | 21,100 CFS | Sep 21, 2009 |
| 11.51 ft | 19,605 CFS | Oct 11, 2020 |
| 10.37 ft | 15,918 CFS | Sep 27, 2024 |
| 9.97 ft | 14,734 CFS | Dec 28, 2018 |
| 9.94 ft | 14,600 CFS | Sep 17, 2004 |
| 9.89 ft | 14,500 CFS | Mar 17, 1990 |
| 9.77 ft | 14,100 CFS | Jan 4, 2023 |
| 9.77 ft | 14,127 CFS | Sep 8, 2021 |
| 9.76 ft | 14,110 CFS | Apr 19, 2019 |
| 9.75 ft | 13,800 CFS | Apr 13, 1979 |
Historical crests published by the National Weather Service for this gauge.
About Chattahoochee River at Roswell
This gauge measures Chattahoochee River at Roswell, Georgia — the reading paddlers, anglers and outfitters on this stretch check before committing to a shuttle.
Shoot the Hooch inside metro Atlanta.
Raw CFS means little on its own, so every reading on this page is shown against the USGS median for the same calendar day — 1,550 CFS for late July, from 50 years of record.
Because the National Weather Service also operates a forecast point here, the page carries the official flood-category ladder and the NWS's own stage-by-stage impact statements.
Chattahoochee River at Roswell — common questions
What is the current flow on Chattahoochee River at Roswell?
As of the last reading on this page, Chattahoochee River at Roswell was running 714 CFS at a gage height of 2.86 ft, or 46% of the USGS median for this date. The number updates automatically from USGS gauge 02335450, which reports every 15 to 60 minutes.
Is that high or low for this time of year?
The USGS median flow for late July at this gauge is 1,550 CFS, calculated from 50 years of record (1976–2026). Comparing today's reading against that median is the only way a raw CFS number tells you anything — 200 CFS is a drought on one river and a flood on another.
How often does this reading update?
USGS transmits from this gauge every 15 to 60 minutes. This page bakes in the most recent reading when it is rebuilt, then refreshes live from USGS when you open it. Readings are provisional and subject to revision by USGS.
What flow is good for tubing Chattahoochee River?
riverlvl does not publish a recommended tubing range — that call belongs to the outfitters and the local authorities who know this stretch. What this page gives you is the objective input: today's flow, the seasonal median for the same date, and where the reading sits in the 12-month record. Local outfitters generally publish their own cutoffs, and they close when the river is up.
Does rain upstream change this reading quickly?
Yes. This is a free-flowing gauge, so it responds directly to rain in the basin upstream. Flashy rises of several feet in a few hours are normal on rivers like this after a heavy storm, which is why the reading is worth checking the morning you go.
What does gage height mean versus CFS?
Gage height is how high the water surface is above the gauge's own zero point, in feet — a local measure, not depth and not elevation. CFS is cubic feet per second, the volume of water moving past the gauge. Flood stages are set in gage height; float and paddling conditions are usually discussed in CFS.