Carlisle Raw Water Intake dam
Carlisle Raw Water Intake
The Carlisle Raw Water Intake, located in North Middleton Township, Cumberland County, Pennsylvania, is a critical structure for water supply, drawing water from the Conodoguinet Creek. Completed in 1904, this stone dam stands at 9 feet high and has a storage capacity of 640 acre-feet, with a normal storage level of 340 acre-feet. The dam covers a surface area of 68 acres and serves a drainage area of 393 square miles.
Maintained by the Pennsylvania Department of Environmental Protection, the Carlisle Raw Water Intake is regulated, inspected, and enforced to ensure its safe and reliable operation. With a low hazard potential and a satisfactory condition assessment, the dam underwent structural modifications in 2002. The last inspection in August 2019 confirmed its safety, with an inspection frequency of 5 years.
Water resource and climate enthusiasts will appreciate the historical significance and engineering feat of the Carlisle Raw Water Intake, which continues to provide essential water supply to the region. As a key infrastructure for water management in Pennsylvania, this dam plays a vital role in ensuring a sustainable water source for the surrounding communities while adhering to state regulatory standards.
Dam data reference
Condition Assessment
- Satisfactory
- No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
- Fair
- No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action.
- Poor
- A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency.
- Unsatisfactory
- A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
- Not Rated
- The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Hazard Potential Classification
- High
- Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
- Significant
- Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
- Low
- Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
- Undetermined
- Dams for which a downstream hazard potential has not been designated or is not provided.
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 Carlisle Raw Water Intake -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Sherman Creek At Shermans Dale | 99 cfs | → |
| Conodoguinet Creek Near Hogestown | 186 cfs | → |
| Mountain Creek Near Pine Grove Furnace | 11 cfs | → |
| Bixler Run Near Loysville | 6 cfs | → |
| Yellow Breeches Creek Near Camp Hill | 170 cfs | → |
| Susquehanna River At Harrisburg | 26,400 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Carlisle Raw Water Intake.
Boat launches
- North Middleton Park
- Letort Falls Park
- Opossum Lake Bl #1
- Opossum Lake Bl #2
- Childrens Lake B.L.
- Old Willow Mill Road 277, Cumberland County
Campgrounds
- Pine Grove Furnace State Park
- Primitive Campsite #4
- Primitive Campsite #6
- Primitive Campsite #7
- Primitive Campsite #5
- Primitive Campsite #8
Fishing spots
Track Carlisle Raw Water Intake in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Carlisle Raw Water Intake
Where does the data for Carlisle Raw Water Intake come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the Low 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 dam, 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 Carlisle Raw Water Intake.