Lake Lanier Georgia Statistics

Pertinent data for Lake Lanier (volumes, shoreline estimates, etc). Latest ACoE data and 5 week forecast (PDF).
ACoE graph of lake elevation for the last 365 days. Real-time water data for Buford Dam.
Graph of the lake elevation for the life of the project. More graphs and trivia.
Buford Dam water release info: 770-945-1466. Lake Lanier info: 770-945-1467.
How can inflow be negative? Answer here. ACF basin diagram (PDF)

With the exception of the values for the change in 12 AM and 6 AM levels, all lake
level values to the right of the decimal point are 100'ths of a foot.

Lake Allatoona data now available (full pool rule still needs work)

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Hey, check out the nifty new graph!

Lake Lanier Georgia Statistics Last Updated on 12-31-2025 at 10:05 AM
12:00 AM Pool Level	1064.39 MSL (down 0.24" since yesterday)
6:00 AM Pool Level	1064.39 MSL (down 0.24" since yesterday)
Full Pool Level	1070.00 MSL (-5.61' deficit at 12:00 AM)
Average 12:00 AM Level	1065.28 MSL (this day, past 66 years)
Next Record High	0.29' (1064.68 MSL on 2025-12-08)
Next Record Low	-2.26' (1062.13 MSL on 2023-12-26)
Inflow	553 CFS
Outflow	907 CFS (-354 CFS deficit)
Power Generation	222 MWH
Rainfall (6AM-6AM)	0.00 Inches
All data comes from the Army Corps of Engineers. Data is normally updated by the ACoE around 7:30 AM CST, this page at 9:05 AM EST MSL = Mean Sea Level, CFS = Cubic Feet per Second, MWH = Megawatt Hours

Flow Rate Conversions Last Updated on 12-31-2025 at 10:05 AM
	Cubic Feet Per Second	Gallons Per Second	Gallons Per Minute	Gallons Per Hour	Gallons Per Day
Inflow	553	4,136	248,203	14,892,218	357,413,234
Outflow	907	6,784	407,089	24,425,392	586,209,410
Difference	-354	-2,648	-158,886	-9,533,173	-228,796,175

Lake Lanier Records Last Updated on 12-31-2025 at 10:05 AM
	Monthly	Yearly	Record	Last*
12:00 AM Full Pool High	MSL on	MSL on	1077.15 MSL on 1964-04-14	1064.41 MSL on 2025-12-30 (1 days ago)
12:00 AM Full Pool Low	MSL on	MSL on	1050.79 MSL on 2007-12-26	1064.35 MSL on 2023-12-29 (733 days ago)
6:00 AM Full Pool High	MSL on	MSL on	1077.17 MSL on 1964-04-14	1064.41 MSL on 2025-12-30 (1 days ago)
6:00 AM Full Pool Low	MSL on	MSL on	728 MSL on 2023-10-14	1064.37 MSL on 2023-12-29 (733 days ago)
Inflow Low	CFS on	CFS on	-2529 CFS on 2005-02-01	257 CFS on 2025-12-30 (1 days ago)
Inflow High	CFS on	CFS on	56913 CFS on 1961-12-12	945 CFS on 2025-12-29 (2 days ago)
Outflow Low	CFS on	CFS on	-1733 CFS on 2019-08-05	905 CFS on 2025-12-26 (5 days ago)
Outflow High	CFS on	CFS on	9827 CFS on 1990-02-26	965 CFS on 2025-12-30 (1 days ago)
Generation Low	MWH on	MWH on	0 MWH on 1960-07-01	215 MWH on 2025-12-04 (27 days ago)
Generation High	MWH on	MWH on	2554 MWH on 1990-02-26	230 MWH on 2025-12-30 (1 days ago)
Rainfall Low	Inches on	Inches on	-4 Inches on 2018-02-01	0 Inches on 2025-12-30 (1 days ago)
Rainfall High	Inches on	Inches on	5.9 Inches on 2000-08-02	1 Inches on 2025-06-13 (201 days ago)
* 'Last' means the last date the item of interest was lower or higher than the value for today. Example: the current 6AM full pool level is 1070.00 on January 1st, 2007, and the lake level has been slowly lowering. If the last date the lake was at 1070.00 was exactly two years ago, January 1st, 2005 will be displayed. This display is not intuitive, so feel free to email jcwren@jcwren.com with any suggestions.
All data comes from the Army Corps of Engineers. Data is normally updated by the ACoE around 7:30 AM CST, this page at 9:05 AM EST MSL = Mean Sea Level, CFS = Cubic Feet per Second, MWH = Megawatt Hours