Hicks Creek: Geography, Geology, and Infrastructure
Hicks Creek is a waterway characterized by a dramatic shift in topography and a history of human intervention. From its mountainous headwaters to its heavily modified lower reaches, the creek serves as a case study in how geological features and industrial activities shape a local watershed.
Key Facts
- Elevation Range: From 1,420–1,440 feet at the source to 531 feet at the mouth.
- Gradient Shift: Steep drops in the upper reaches contrast with an extremely low gradient in the lower sections.
- Human Impact: Lower reaches have been channelized, with flood protection projects implemented in 1982 and 2003.
- Soil Composition: Predominantly Hydrologic Soil Group C, with variations of A, B, and D throughout the watershed.
- Infrastructure: Eight structures span the lower reaches, including road bridges and golf cart crossings.
Topography and Gradient
The physical landscape of the Hicks Creek watershed is divided into two distinct zones. The northern two-thirds of the watershed are relatively mountainous, containing the highest elevations. While the southern edge features some hills, the valley upstream of Slocum Avenue is defined by steep sides and a steep floor.
The creek's gradient—the degree of slope or incline—varies significantly. In the upper reaches, the creek drops 800 feet (240 m) over a distance of 2.4 miles. In stark contrast, the lower reaches exhibit an extremely low gradient, dropping only 12 feet (3.7 m) over 1.9 miles. This flatness is attributed to surface mining activities conducted within the watershed during the 1940s and 1950s.
[ไม่มีภาพประกอบ]Geology and Soil Composition
The watershed is composed of various hydrologic soil groups, which categorize soils based on their capacity to transmit water. The upper reaches are predominantly composed of Group C soils, while the headwaters are located near Group D soils.
As the creek progresses, the soil composition shifts. A large patch of Group A soil is found in the middle reaches, and Group B soil appears in two separate patches, one of which is located near the creek's mouth.
Infrastructure and Flood Management
Due to its geography and history, Hicks Creek has undergone significant modification. From Slocum Avenue downstream to the mouth, the creek has been largely channelized—a process where a stream is straightened or confined to a man-made channel to control flow. In at least one section, the creek flows through an artificial concrete channel and passes through a pumping station near its mouth.
To manage environmental risks, the Pennsylvania Department of Environmental Protection has implemented several projects. A flood protection project was completed in 1982, and in 2003, a debris basin was constructed just upstream of Slocum Avenue to prevent debris from clogging the lower reaches of the creek.
The lower reaches are also heavily intersected by human infrastructure. A railroad line runs nearby, and the creek is spanned by eight structures: the Slocum Avenue bridge, three golf cart bridges at the Four Seasons Golf Course, and bridges at Sturmer, Schooley, Packer, and Exeter Avenues.
[ไม่มีภาพประกอบ]Hydrological Summary
| Feature | Detail/Value |
|---|---|
| Source Elevation | 1,420 – 1,440 feet (430 – 440 m) |
| Mouth Elevation | 531 feet (162 m) |
| Upper Reach Drop | 800 feet over 2.4 miles |
| Lower Reach Drop | 12 feet over 1.9 miles |
| Zero Damage Elevation | 553.79 to 555.90 feet (168.80 to 169.44 m) |
| Predominant Soil Group | Hydrologic Soil Group C |
Frequently Asked Questions
What caused the low gradient in the lower reaches of Hicks Creek?
The extremely low gradient in the lower reaches is linked to surface mining activities that took place in the watershed during the 1940s and 1950s.
What is the purpose of the debris basin near Slocum Avenue?
Built by the Pennsylvania Department of Environmental Protection in 2003, the debris basin prevents debris from flowing downstream and clogging the lower reaches of the creek.
What is the "zero damage elevation" for Hicks Creek?
The zero damage elevation is the height at which flooding from the creek cannot cause any damage. For Hicks Creek, this ranges from 553.79 to 555.90 feet (168.80 to 169.44 m), depending on the specific stream reach.
Which soil groups are found in the Hicks Creek watershed?
The watershed contains Hydrologic Soil Groups A, B, C, and D. Group C is the most predominant in the upper reaches, while Group D is found near the headwaters, Group A in the middle reaches, and Group B in two patches, including one near the mouth.
How many bridges span the lower reaches of the creek?
There are eight structures spanning the lower reaches, including the Slocum Avenue bridge, three golf cart bridges at the Four Seasons Golf Course, and four road crossings (Sturmer, Schooley, Packer, and Exeter Avenues).