Lower Colorado River Operations

Note: The hydrologic data on this website are provisional records collected by an automated process and are subject to change. At the conclusion of each calendar year, these data are reviewed and revised as needed, following standards for quality assurance, to create final data records published in the Lower Colorado River Stream Flow Reports and the Colorado River Accounting and Water Use Reports.

Switch between reports:

Current Day - Hourly Last Seven Days - Hourly Last Seven Days - Daily Current Month - Daily Last Month - Daily Year to Date - Daily Last Year - Daily

REPORT LAST UPDATED ON: 12/13/2025 04:13 AM

SITE NAME: LAKE MEAD
PARAMETER: RESERVOIR WS ELEVATION, END OF PERIOD PRIMARY READING
UNITS: FEET

Show/Hide Data

Day	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC
1	1063.4	1066.5	1068.2	1066.4	1062.0	1057.0	1054.9	1054.1	1055.6	1057.4	1057.6	1059.0
2	1063.4	1066.6	1068.2	1066.2	1061.8	1056.8	1054.8	1054.1	1055.6	1057.6	1057.6	1059.1
3	1063.5	1066.7	1068.2	1066.0	1061.5	1056.6	1054.7	1054.2	1055.7	1057.7	1057.5	1059.2
4	1063.6	1066.8	1068.2	1065.8	1061.4	1056.5	1054.8	1054.2	1055.9	1057.9	1057.5	1059.4
5	1063.8	1066.9	1068.1	1065.7	1061.3	1056.4	1054.8	1054.3	1056.0	1058.1	1057.4	1059.6
6	1064.0	1066.9	1068.0	1065.6	1061.2	1056.3	1054.8	1054.3	1056.3	1058.1	1057.3	1059.7
7	1064.1	1067.0	1068.0	1065.4	1061.0	1056.3	1054.7	1054.3	1056.4	1058.0	1057.3	1059.9
8	1064.2	1067.2	1068.0	1065.2	1060.7	1056.2	1054.6	1054.3	1056.4	1058.0	1057.3	1060.0
9	1064.3	1067.2	1068.0	1065.1	1060.5	1056.1	1054.5	1054.3	1056.4	1057.9	1057.3	1060.1
10	1064.4	1067.3	1068.0	1064.9	1060.3	1055.9	1054.5	1054.3	1056.5	1057.8	1057.2	1060.3
11	1064.6	1067.5	1068.0	1064.7	1060.1	1055.9	1054.4	1054.4	1056.5	1057.8	1057.3	1060.4
12	1064.7	1067.6	1067.8	1064.6	1059.9	1055.8	1054.4	1054.4	1056.7	1057.8	1057.2	1060.6
13	1064.9	1067.7	1067.6	1064.5	1059.7	1055.8	1054.5	1054.4	1056.8	1057.7	1057.2	--
14	1065.0	1067.8	1067.6	1064.2	1059.7	1055.8	1054.5	1054.4	1056.9	1057.7	1057.1	--
15	1065.1	1068.0	1067.6	1064.0	1059.5	1055.9	1054.4	1054.5	1057.0	1057.7	1057.2	--
16	1065.2	1068.2	1067.5	1063.8	1059.4	1055.8	1054.5	1054.6	1056.9	1057.7	1057.2	--
17	1065.4	1068.2	1067.5	1063.6	1059.3	1055.7	1054.6	1054.7	1056.9	1057.6	1057.2	--
18	1065.5	1068.3	1067.5	1063.5	1059.3	1055.6	1054.6	1054.8	1056.8	1057.6	1057.3	--
19	1065.7	1068.3	1067.5	1063.4	1059.2	1055.5	1054.7	1054.8	1056.8	1057.6	1057.3	--
20	1065.8	1068.3	1067.4	1063.3	1059.0	1055.4	1054.7	1054.9	1056.8	1057.6	1057.3	--
21	1065.9	1068.3	1067.4	1063.2	1058.8	1055.3	1054.7	1054.9	1056.8	1057.7	1057.4	--
22	1065.9	1068.4	1067.4	1063.0	1058.5	1055.4	1054.7	1054.9	1056.7	1057.7	1057.5	--
23	1066.0	1068.5	1067.4	1062.8	1058.3	1055.4	1054.6	1055.0	1056.7	1057.7	1057.5	--
24	1066.1	1068.5	1067.3	1062.6	1058.2	1055.3	1054.6	1055.1	1056.7	1057.7	1057.7	--
25	1066.2	1068.5	1067.2	1062.4	1058.2	1055.3	1054.5	1055.1	1056.7	1057.7	1057.9	--
26	1066.4	1068.4	1067.1	1062.4	1058.1	1055.2	1054.5	1055.1	1056.8	1057.7	1058.1	--
27	1066.5	1068.3	1066.9	1062.5	1057.9	1055.1	1054.4	1055.2	1057.0	1057.7	1058.3	--
28	1066.4	1068.2	1066.8	1062.5	1057.7	1055.1	1054.4	1055.3	1057.0	1057.7	1058.5	--
29	1066.4	--	1066.7	1062.4	1057.5	1055.0	1054.3	1055.4	1057.2	1057.6	1058.7	--
30	1066.4	--	1066.7	1062.2	1057.2	1055.0	1054.2	1055.5	1057.3	1057.5	1058.9	--
31	1066.4	--	1066.4	--	1057.0	--	1054.1	1055.5	--	1057.6	--	--