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 05-05-2025 at 10:05 AM
12:00 AM Pool Level	1071.72 MSL (down 0.12" since yesterday)
6:00 AM Pool Level	1071.73 MSL (down 0.12" since yesterday)
Full Pool Level	1071.00 MSL (0.72' surplus at 12:00 AM)
Average 12:00 AM Level	1070 MSL (this day, past 66 years)
Next Record High	0.24' (1071.96 MSL on 2025-04-27)
Next Record Low	-0.02' (1071.70 MSL on 2025-05-03)
Inflow	2573 CFS
Outflow	2770 CFS (-197 CFS deficit)
Power Generation	758 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 05-05-2025 at 10:05 AM
	Cubic Feet Per Second	Gallons Per Second	Gallons Per Minute	Gallons Per Hour	Gallons Per Day
Inflow	2573	19,247	1,154,842	69,290,555	1,662,973,333
Outflow	2770	20,721	1,243,262	74,595,739	1,790,297,758
Difference	-197	-1,473	-88,419	-5,305,184	-127,324,425

Lake Lanier Records Last Updated on 05-05-2025 at 10:05 AM
	Monthly	Yearly	Record	Last*
12:00 AM Full Pool High	1071.8 MSL on 2025-05-01	1072.05 MSL on 2025-02-18	1077.15 MSL on 1964-04-14	1071.73 MSL on 2025-05-04 (1 days ago)
12:00 AM Full Pool Low	1071.7 MSL on 2025-05-03	1068.67 MSL on 2025-01-06	1050.79 MSL on 2007-12-26	1071.7 MSL on 2025-05-03 (2 days ago)
6:00 AM Full Pool High	1071.81 MSL on 2025-05-01	1072.09 MSL on 2025-02-18	1077.17 MSL on 1964-04-14	1071.74 MSL on 2025-05-04 (1 days ago)
6:00 AM Full Pool Low	1071.72 MSL on 2025-05-03	1068.74 MSL on 2025-01-01	728 MSL on 2023-10-14	1071.72 MSL on 2025-05-03 (2 days ago)
Inflow Low	1278 CFS on 2025-05-01	645 CFS on 2025-04-21	-2529 CFS on 2005-02-01	2093 CFS on 2025-05-03 (2 days ago)
Inflow High	3361 CFS on 2025-05-04	26583 CFS on 2025-02-14	56913 CFS on 1961-12-12	3361 CFS on 2025-05-04 (1 days ago)
Outflow Low	2458 CFS on 2025-05-01	827 CFS on 2025-01-06	-1733 CFS on 2019-08-05	2458 CFS on 2025-05-01 (4 days ago)
Outflow High	2879 CFS on 2025-05-03	3570 CFS on 2025-01-12	9827 CFS on 1990-02-26	2771 CFS on 2025-05-04 (1 days ago)
Generation Low	654 MWH on 2025-05-01	226 MWH on 2025-01-29	0 MWH on 1960-07-01	755 MWH on 2025-05-02 (3 days ago)
Generation High	772 MWH on 2025-05-03	772 MWH on 2025-05-03	2554 MWH on 1990-02-26	759 MWH on 2025-05-04 (1 days ago)
Rainfall Low	0 Inches on 2025-05-01	0 Inches on 2025-01-01	-4 Inches on 2018-02-01	0 Inches on 2025-05-02 (3 days ago)
Rainfall High	1 Inches on 2025-05-04	2 Inches on 2025-04-07	5.9 Inches on 2000-08-02	1 Inches on 2025-05-04 (1 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