Public Atlas.
Menu
Public Atlas / Northern California / CDEC FOLNorthern California / CDEC FOL

Folsom Lake water level

CDEC station FOL represents Folsom Lake on the American River. The station metadata identifies NGVD29 for reservoir elevation.

Check source timestamp
CDEC station metadata ↗Download source CSV ↗
DAILY RESERVOIR ELEVATION407.35 ft

Source series date: 2026-09-27

7-DAY CHANGE-0.92 ft

Same CDEC station and sensor

Recent daily elevation

413.6410.8408.0
Aug 24, 2026Sep 27, 2026
View the dated readings (elevation in feet)
DateElevation (ft)
2026-08-24414.23
2026-08-25413.78
2026-08-26413.24
2026-08-27412.87
2026-08-28412.68
2026-08-29412.41
2026-08-30412.13
2026-08-31411.78
2026-09-01411.42
2026-09-02411.17
2026-09-03410.95
2026-09-04410.76
2026-09-05410.68
2026-09-06410.42
2026-09-07410.08
2026-09-08409.86
2026-09-09409.96
2026-09-10409.74
2026-09-11409.59
2026-09-12409.45
2026-09-13409.25
2026-09-14409.00
2026-09-15408.90
2026-09-16408.68
2026-09-17408.55
2026-09-18408.48
2026-09-19408.40
2026-09-20408.27
2026-09-21408.05
2026-09-22407.92
2026-09-23407.78
2026-09-24407.72
2026-09-25407.68
2026-09-26407.55
2026-09-27407.35

NGVD 1929 (CDEC station metadata). The chart uses CDEC’s DATE TIME series date; OBS DATE is preserved in the table. Missing values are omitted, and the connecting line does not imply measurements on missing dates.

Read this series carefully

The elevation is CDEC sensor 6 in feet. We do not infer percent full from this number or compare it directly with another reservoir’s datum. Check the station’s metadata for revisions and source context.

The series does not report ramp access, swimming conditions, a forecast or available drinking-water supply. Use the operating agency’s notices for access and conditions.

Retrieved 2026-09-28T19:41:17.008Z. Daily refresh target; previous successful readings are retained if a source check fails.

Source observations

Series dateElevation ftCDEC OBS DATEFlag
2026-09-27407.3520260928 0000None supplied
2026-09-26407.5520260927 0000None supplied
2026-09-25407.6820260926 0000None supplied
2026-09-24407.7220260925 0000None supplied
2026-09-23407.7820260924 0000None supplied
2026-09-22407.9220260923 0000None supplied
2026-09-21408.0520260922 0000None supplied
2026-09-20408.2720260921 0000None supplied
2026-09-19408.4020260920 0000None supplied
2026-09-18408.4820260919 0000None supplied
Explore all lake sources →
Teal water in a clear vessel beside a terracotta vessel and cobalt object.
Lakes · 3 min read

How to read a reservoir’s percent full

Storage and elevation answer different questions. Use both to understand a reservoir.

Read the guide
An open field notebook and brass survey level on a limestone ledge beside water.
Lakes · 3 min read

Lake Travis: put today’s reading in context

Follow a dated TWDB reading from the headline number to its 30-day chart.

Read the guide