Oconee River at Lake Sinclair

Highest listed crest 341.50 ftFlood stage 340.5 ft2 crests since 1998

The Oconee River at Lake Sinclair crested above flood stage 2 times among the 2 crests the National Weather Service lists from 1998 to 2005. The highest, 341.50 ft on March 9, 1998, was minor flooding, 1.00 feet above flood stage. 5 other gauges on the Oconee River crested above flood stage within a week of it, 1 at its own highest listed crest.

The gauge

Highest listed crest: 341.50 ft; March 9, 1998; 86,000 cubic feet per second
Flood stage: 340.5 ft; No major stage set
Crests at major: 0; 2 above flood stage
Most recent flood crest: March 24, 2005; 341.33 ft, minor flooding
Location: Baldwin County; Near Milledgeville (4.2 mi)
Identifiers: NWS SNCG1; No USGS station

Flood stages

The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.

Flood categories, Oconee River at Lake Sinclair

Action stage	340.0	0	—	The level at which the NWS or its partners begin to take action
Flood stage (minor)	340.5	2	Mar 24, 2005	Minimal or no property damage, but possibly some public threat

Every listed crest

2 crests from 1998 to 2005. Filled: at or above flood stage. Hover a crest for its date and stage.

Crests at or above flood stage, by decade

These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.

Highest crests

Highest listed crests, Oconee River at Lake Sinclair

1	Mar 9, 1998	341.50	+1.00	Minor	86,000
2	Mar 24, 2005	341.33	+0.83	Minor	—

The worst floods along the Oconee River

For this gauge's highest crests, the other gauges on the Oconee River that crested above flood stage within a week.

March 9, 1998: 341.50 ft here, minor flooding

MilledgevilleGA · Mar 9, 1998 · 41.10 ft · Major
DublinGA · Mar 12, 1998 · 32.00 ft · Major
OconeeGA · Mar 10, 1998 · 29.90 ft · Major · its highest
Highway 280 near Mount VernonGA · Mar 14, 1998 · 23.03 ft · Major
PenfieldGA · Mar 9, 1998 · 20.13 ft · Moderate

March 24, 2005: 341.33 ft here, minor flooding

PenfieldGA · Mar 30, 2005 · 17.25 ft · Minor

Gauges on the Oconee River

Flood gauges sharing the river's name, linked within 80 miles of one another.

Flood gauges on the Oconee River

Avant Mine near Oconee	GA	18.0	20.67 ft, Apr 15, 1998	0
Dublin	GA	21.0	33.00 ft, Apr 12, 1936	4
Highway 280 near Mount Vernon	GA	16.0	25.30 ft, Apr 14, 1936	3
Lake Oconee	GA	435.5	436.00 ft, Feb 5, 1998	0
Lake Sinclair this gauge	GA	340.5	341.50 ft, Mar 9, 1998	0
Milledgeville	GA	22.0	42.90 ft, Feb 25, 1961	5
Oconee	GA	17.0	29.90 ft, Mar 10, 1998	6
Penfield	GA	13.0	26.90 ft, Dec 19, 1919	0

Other gauges in Baldwin County

Flood gauges in Baldwin County

Milledgeville	22.0	42.90 ft, Feb 25, 1961	5

Baldwin County: every hazard · River floods across the country · Georgia

NOAA National Water Prediction Service, gauge SNCG1, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.