Hartwell Lake Elevation Percentiles by Month
Period of record Jan 1962 - Mar 2026
Month	P05	P10	P20	P30	P40	P50	P60	P70	P80	P90	P95	Avg
Jan	647.40	648.75	652.80	654.01	655.96	656.89	657.39	657.96	658.72	660.16	661.21	655.68
Feb	648.69	650.84	653.78	655.86	657.09	658.00	658.58	659.17	659.85	660.68	661.71	656.84
Mar	650.10	652.19	656.31	658.22	659.02	659.52	659.94	660.52	661.12	662.10	662.90	658.52
Apr	652.05	653.34	658.22	659.65	660.04	660.33	660.65	661.05	661.73	662.35	662.80	659.49
May	652.39	654.30	658.35	659.96	660.31	660.56	660.80	661.14	661.62	662.26	662.70	659.67
Jun	651.44	654.22	657.88	659.46	660.09	660.39	660.67	660.98	661.39	661.92	662.37	659.36
Jul	650.03	654.10	656.60	658.08	659.07	659.68	660.04	660.27	660.58	661.27	661.81	658.50
Aug	648.73	652.78	655.10	656.55	657.36	658.04	658.70	659.39	660.00	660.53	661.25	657.24
Sep	647.65	650.56	653.88	655.09	655.91	656.53	657.39	658.45	659.54	660.20	660.56	656.11
Oct	647.12	648.41	652.75	654.64	655.44	656.04	657.20	658.57	659.34	660.56	661.22	655.71
Nov	646.10	648.69	651.53	654.23	654.91	656.11	657.23	657.85	658.95	659.89	660.60	655.17
Dec	645.82	649.22	651.90	653.93	654.81	655.72	656.77	657.37	658.32	660.03	660.78	654.94