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Ocmulgee River at Macon, GA (MACG1)


Data Type




Inundation Levels
NAVD88 Stage

Record Crest: 35.4 ft
304.435.0
303.434.0
302.433.0
301.432.0
300.431.0
299.430.0

Major Flooding Begins

298.429.0
297.428.0
296.427.0
295.426.0

Moderate Flooding Begins

294.425.0
293.424.0
292.423.0
291.422.0
290.421.0
289.420.0
288.419.0
287.418.0

Minor Flooding Begins

286.417.0
285.416.0

Near Flooding Begins

284.415.0
283.414.0
* = Extended rating
Weather Forecast Office Peachtree City/Atlanta, GA Southeast River Forecast Center
Hydrograph River at a Glance Download Inundation
Mapping
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Click on mapped inundation to see water depth values for that location, or hold shift and drag to zoom to area.

Current Stage:
6.8 ft at 11/22/2017 18:30:00 UTC
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Inundation Legend
Depth in feet
USGS Gauge Location Gauge Location
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Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.

Gauge Information Collapse

Map Overlays

Flood Categories (in feet)
Major Flood Stage: 30
Moderate Flood Stage: 26
Flood Stage: 18
Action Stage: 16
Low Stage (in feet): 0

Historic Crests
(1) 35.40 ft on 07/06/1994
(2) 29.90 ft on 03/18/1990
(3) 29.80 ft on 03/19/1990
(4) 29.50 ft on 03/04/1971
(5) 28.00 ft on 11/29/1948
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 19.38 ft on 04/08/2017
(2) 19.66 ft on 01/23/2017
(3) 18.58 ft on 01/04/2017
(4) 22.38 ft on 04/02/2016
(5) 19.09 ft on 02/25/2016
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 3.00 ft on 10/24/1954
(2) 3.20 ft on 09/30/1954
(3) 3.40 ft on 10/21/1940
Show More Low Water Records

Graphical representation of flood inundation for NWS flood categories are based on steady state hydraulic modeling of water surface elevations for incremented discharges. Map shows approximate inundation areas for given water surface elevations and should not be used for navigation or permitting or other legal purposes, but strictly as a planning reference tool.

Site-specific information:
In addition, there are differences between AHPS and FEMA mapping exist in the vicinity of the leveed area. These differences exist because AHPS and FEMA mapping have been developed for different risk communication purposes. AHPS mapping has been designed to illustrate actual flood conditions. FEMA mapping has been designed as a frequency-based study for regulatory, flood insurance purposes. Because of these diverging risk communication purposes, the FEMA and AHPS maps cannot be cross-compared to evaluate map accuracy or map quality.

Layer Order:

  • Levee Risk Area
  • Flood Control Structures
  • Selected Flood Stage
  • Floodway
  • 0.2% Annual Exceedance Flood Probability
  • 1% Annual Exceedance Flood Probability
  • Inundation Study Boundaries
  • Centerline
  • Transport
  • Terrain

Flood Impacts Collapse
If you notice any errors in the below information, please contact our Webmaster
36 Widespread inundation flooding never seen before occurs in the Macon area. This flooding will be worse than July 6...1994 with Tropical Storm Alberto. Two feet of water will be overflowing the levee on the east side of Macon and cause severe erosion. Flood waters several feet deep affect homes on the left bank near Glenridge Drive and businesses and other structures in southeast Macon. Water approaches the Macon Telegraph building. Portions of Interstate 16 and 75 in Macon will be flooded and closed.
35.4 Record widespread inundation flooding occurs in the Macon area. This ties the record set on July 6...1994 with Tropical Storm Alberto. The Macon levee was breeched at 34 feet flooding the Georgia State Fairgrounds area. Flood waters a few feet deep affect several homes on the left bank near Glenridge Drive and businesses off of Tuft Springs and Mead Roads and other structures in southeast Macon. Evacuations should have been completed. Portions of Interstate 16 and 75 in Macon will be flooded and closed.
34 Dangerous flooding expands as the levee is topped on the east side of Macon. Water quickly covers several streets including portions of Martin Luther King Boulevard...Fifth Street...and Riverside Drive. The Georgia State Fairgrounds baseball complex floods. Several homes on the left bank near Glenridge Drive will be flooded up to 4 feet deep. Some businesses off of Tuft and Mead Roads will be flooded. Evacuations will be necessary. Portions of Interstate 16 and 75 will flood at on and off ramps in Macon.
32 Dangerous flooding occurs as the water level approaches the top of the Macon levee. Flood waters will be hitting the three main bridges in Macon. A few homes on the left bank near Glenridge Drive will be flooded up to two feet deep. Flood waters will be near the foundations of some businesses off of Tuft Springs and Mead Roads in south Macon. Some evacuations may be necessary! Low portions of Interstate 16 and 75 will begin to experience flooding especially at on and off ramps in Macon.
30 Major flooding begins. The Macon GreenWay Ocmulgee Heritage Trail will be under 10 feet of water. The water level will be hitting the bottom of the three main bridges in Macon. A few homes on the left bank near Glenridge Drive will begin to flood. Flood waters will be approaching some businesses off of Tuft Springs and Mead Roads in south Macon. Large portions of the Southern Railroad tracks will be inundated. Agricultural lands just east and south of Macon will be flooded up to 12 feet deep.
29 Significant flooding expands over the Macon GreenWay Ocmulgee Heritage Trail north of the U.S. Highway 80 bridge with some areas under 9 feet of water. The water level will reach the bottom of the bridge. Backyards of a few homes on the left bank near Glenridge Drive will be completely flooded. Large portions of the Southern Railroad tracks around Mead Road will be a few feet under water. Agricultural lands just east and south of Macon will be under 1 to 10 feet of water.
26 Moderate flooding begins on the Macon GreenWay Ocmulgee Heritage Trail north of the Martin Luther King Boulevard bridge with some areas under 6 feet of water. Backyards of a few homes on the left bank near Glenridge Drive will be flooded. Portions of the Southern Railroad tracks around Mead Road will become inundated. Large portions of agricultural lands just east and south of Macon will be under 1 to 8 feet of water.
25 Minor flooding expands further into the woodlands and over the Macon GreenWay Ocmulgee Heritage Trail north of the Martin Luther King Boulevard bridge. The flood waters will be up to 5 feet deep on portions of the trail. Large portions of agricultural lands just east and south of Macon will be under 1 to 7 feet of water.
23 Minor flooding continues to expand. Large portions of the Macon GreenWay Ocmulgee Heritage Trail floods north of the Martin Luther King Boulevard bridge. The flood waters will be up to 3 feet deep on portions of the trail. Large portions of agricultural lands east of Macon and well downstream will be under 1 to 5 feet of water.
21 Minor flooding expands. An increasing amount of the Macon GreenWay Ocmulgee Heritage Trail floods north of the Martin Luther King Boulevard bridge. The flood waters will be up to two feet deep on portions of the trail and both banks overflow upstream from the bridge. Large portions of agricultural lands east of Macon and well downstream will be under 1 to 4 feet of water.
20 Minor flooding expands. An increasing amount of the Macon GreenWay Ocmulgee Heritage Trail floods north of the Martin Luther King Boulevard bridge. The flood waters will be around one foot deep on portions of the trail and both banks overflow upstream from the bridge. Large portions of agricultural lands well downstream will be under one to three feet of water.
19 Minor flooding continues. The Macon Greenway Ocmulgee Heritage Trail will begin to flood in areas just north of the Martin Luther King Boulevard bridge. The public should not use this portion of the trail. In addition...the lowest sections of the Charles Jones Gateway Park will flood. Portions of agricultural lands well downstream will be under two feet of water.
18 Flood stage is reached. Minor flooding begins along the river upstream and downstream from the gage at U.S. Highway 80 or Martin Luther King Boulevard. Portions of the Ocmulgee Riverwalk and agricultural lands well downstream will be under a foot of water.
16 Bankfull conditions occur along the river upstream and downstream from the gage at U.S. Highway 80 or Martin Luther King Boulevard. Some flooding of low lying areas begins in portions of the Ocmulgee Riverwalk and agricultural lands well downstream.
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Page last modified: 21-Dec-2016 5:25 PM
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Graphical representation of flood inundation for NWS flood categories are based on steady state hydraulic modeling of water surface elevations for incremented discharges. Map shows approximate inundation areas for given water surface elevations and should not be used for navigation or permitting or other legal purposes, but strictly as a planning reference tool.