Lake levels › South Carolina

NINETYNINE ISLAND Reservoir water level today

Normal for this time of year

509.83ft

feet above sea level ·

vs normal for Oct 10−0.8 ft
24 hours+0.03 ft
7 days+1.9 ft
30 days+0.0 ft
vs a year ago+0.0 ft

Is NINETYNINE ISLAND Reservoir low right now?

NINETYNINE ISLAND Reservoir was at 509.83 ft on October 10, 2026. That is 0.76 ft below the typical level for October 10, within the normal range. Over the past week the lake has been rising about 0.27 ft a day.

Last 12 monthsDaily level Normal range (10–90% of past years)
507509511512514NovDecJanFebMarAprMayJunJulAugSepOct

NINETYNINE ISLAND Reservoir on Oct 10 in past years

2025509.8+0.0
2024510.7−0.9
2023509.7+0.2
2022509.3+0.5
2021512.4−2.6
2020509.9−0.1

Level on the same date each year, and how today compares.

Daily levels, last two weeks

DateLevel (ft)Change
Oct 10509.82+0.02
Oct 9509.80+0.01
Oct 8509.79−0.01
Oct 7509.80+0.01
Oct 6509.79−0.28
Oct 5510.07+1.75
Oct 4508.32+0.40
Oct 3507.92−0.47
Oct 2508.39−0.49
Oct 1508.88−0.43
Sep 30509.31−0.34
Sep 29509.65−0.14
Sep 28509.79−0.02
Sep 27509.81+0.01

Daily means of the operator's readings (midnight to midnight, local time).

About NINETYNINE ISLAND Reservoir

10-year range
505.8 ft (October 18, 2022) to 517.9 ft (September 28, 2024)
Data
U.S. Geological Survey — USGS 02153550
Datum
NAVD88

Lakes near NINETYNINE ISLAND Reservoir

Questions

Is NINETYNINE ISLAND Reservoir low right now?

NINETYNINE ISLAND Reservoir was at 509.83 ft on October 10, 2026. That is 0.76 ft below the typical level for October 10, within the normal range. Over the past week the lake has been rising about 0.27 ft a day.

How often is the NINETYNINE ISLAND Reservoir level updated?

The operator reports every 15 minutes to an hour. This page refreshes several times a day; the time of the latest reading is shown next to the level.

Where does this data come from?

U.S. Geological Survey (USGS 02153550). Readings are provisional and can be revised.