Blue Marsh Lake reservoir
Blue Marsh Lake
Blue Marsh Lake, located in Berks County, Pennsylvania, was constructed in the early 1970s for flood control, water supply, and recreational purposes. The lake is part of the Tulpehocken Creek Watershed and is fed by the Tulpehocken Creek and several smaller tributaries. The hydrology of the lake is managed by the U.S. Army Corps of Engineers and includes a system of dams, reservoirs, and pumping stations to maintain water levels.
Surface flow providers include the Tulpehocken Creek, Spring Creek, Dry Brooks, and Blue Marsh Creek, while snowpack can contribute to water levels during the winter months. The lake provides water for local agriculture and is also used for recreational activities such as boating, fishing, biking, and hiking. The area surrounding the lake is managed by the U.S. Army Corps of Engineers and offers various amenities such as campgrounds, picnic areas, and a beach.
Daily levels at Blue Marsh Lake
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
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 Blue Marsh Lake -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Tulpehocken Cr At Blue Marsh Damsite Near Reading | 96 cfs | → |
| Tulpehocken Creek Near Reading | 98 cfs | → |
| Schuylkill River At Reading | 801 cfs | → |
| Tulpehocken Creek Near Bernville | 74 cfs | → |
| Schuylkill River At Berne | 409 cfs | → |
| Maiden Creek Near Virginville | 87 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Blue Marsh Lake.
Boat launches
- Epler's Landing
- Sheidy Road
- Wall Street Leesport
- Reading Riverfront Park
- Kaercher Creek
- Middle Creek Lake
Track Blue Marsh Lake 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 Blue Marsh Lake
Where does the data for Blue Marsh Lake 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 Blue Marsh Lake.