Reservoir Report

Ninetynine Island Reservoir Below Cherokee Falls reservoir

South-Carolina, USA USGS
Today high
--
Tonight low
--
Current storage
98ft
% of normal
-1%
Loading current conditions…
Right now · current storage
Ninetynine Island Reservoir Below Cherokee Falls
USGS · 02153550
98 ft
As of 2026-05-13
Seasonal avg
100
Record max
110
24h change
0.2%
Loading storage history…
Loading next 24 hours…
Loading 7-day outlook…
Ninetynine Island Reservoir Below Cherokee Falls -- None reservoir
Ninetynine Island Reservoir Below Cherokee Falls None
About this reservoir

Ninetynine Island Reservoir Below Cherokee Falls

Ninetynine Island Reservoir is a man-made lake located below Cherokee Falls in South Carolina. The reservoir was constructed in the early 1900s to provide hydroelectric power to the surrounding area. The hydrology of Ninetynine Island Reservoir is primarily fed by the Broad River, which flows into the lake from the north. The lake also receives water from several smaller tributaries, as well as from snowpack melt during the winter months. The lake serves as a water source for agricultural irrigation and recreational activities such as fishing, boating, and swimming. The surrounding area is rich in history and culture, with several museums and historic sites in the vicinity. Overall, Ninetynine Island Reservoir is an important resource for the community, providing both economic and recreational benefits.

StateNone
OperatorUSGS
Site ID02153550
Percent of normal-1%
Last updated2026-05-13
Records since2007
Storage trends

Daily levels at Ninetynine Island Reservoir Below Cherokee Falls

Storage volume, pool elevation, and total release plotted from the operating agency's daily observations.

Elevation of reservoir water surface above datum, ft

ft · code 00062

Detailed forecast

Plan around the weather

Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

Loading hourly forecast…
Deep dive

5-day forecast table

Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
Loading detailed forecast…
Long-term outlook

15-day temperature & precipitation

Daily temperatures, snow, and rain projected over the next two weeks.

Loading 15-day outlook…
Regional inflow

Nearby streamflow gauges

USGS streamgauges around Ninetynine Island Reservoir Below Cherokee Falls -- inflows here typically show up in storage 24-72 hours later.

Track Ninetynine Island Reservoir Below Cherokee Falls in the Snoflo app

Save this reservoir as a favorite and set push alerts when storage crosses a threshold (e.g. "alert me at 80% of normal").

FAQ

About Ninetynine Island Reservoir Below Cherokee Falls

Where does the data for Ninetynine Island Reservoir Below Cherokee Falls come from?

Daily storage, pool elevation, and release rates are sourced from USGS, USBR, and USACE monitoring stations. Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.

How often is the report updated?

Storage observations are updated daily by the operating agency. The 15-day weather forecast refreshes throughout the day. Snoflo caches and renders the most recent observation -- check the "as of" timestamp on the storage card.

What does the Hazard hazard rating mean?

The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.

What's "% of normal"?

The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).

Can I get alerts when storage crosses a threshold?

Yes -- alerts are managed in the Snoflo iOS app. Favorite this reservoir, set a threshold, and you'll get a push the moment conditions cross.

More reservoirs

Other water bodies near here

Snoflo-tracked reservoirs and dams within driving distance of Ninetynine Island Reservoir Below Cherokee Falls.

Premium feature

Favorites and alerts are part of Snoflo Premium. Save reservoirs, set storage thresholds, and get push notifications when conditions cross.

Upgrade to Premium Not now
🔔

Manage alerts in the Snoflo app

Custom alerts are configured in the iOS app -- favorite this reservoir, set a threshold, and you'll get a push the moment conditions cross.

Open App Store