Indian Rock Dam reservoir
Indian Rock Dam
Indian Rock Dam is a popular recreational area located in York County, Pennsylvania. The dam was built in the early 1900s to control flooding along the Codorus Creek. The Indian Rock Dam provides water to the nearby city of York and is an important source of hydroelectric power. The dam's hydrology is influenced by specific surface flow and snowpack providers. The Codorus Creek is the primary provider of surface flow, while snowpack accumulation in the surrounding mountains contributes to the dam's water levels during the spring and summer months. The Indian Rock Dam is also used for agricultural purposes, providing irrigation to nearby farms. The area is a popular destination for outdoor enthusiasts, offering hiking trails, picnic areas, and fishing opportunities.
Daily levels at Indian Rock Dam
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
Precipitation, total, in
in · code 00045
Temperature, air, °F
deg F · code 00021
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.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
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.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Indian Rock Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Codorus Creek Near York | 86 cfs | → |
| Codorus Creek At Spring Grove | 18 cfs | → |
| Codorus Creek At Pleasureville | 208 cfs | → |
| West Conewago Creek Near Manchester | 159 cfs | → |
| West Conewago Creek At East Berlin | 60 cfs | → |
| Susquehanna River At Marietta | 42,300 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Indian Rock Dam.
Boat launches
- Lake Williams - Lake Under Drawdown
- Lake Redman
- Codorus State Park Mooring Cove
- Codorus State Park Main Launch
- Marina Area, Codorus State Park
- Codorus State Park Hidden Cove
Campgrounds
- Camp Conewago - Boy Scouts Of America
- Camp Andrews
- Pine Grove Furnace State Park
- Crazy Horse
- Custer
- Cochise
Fishing spots
Track Indian Rock Dam 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").
About Indian Rock Dam
Where does the data for Indian Rock Dam 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.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Indian Rock Dam.