Stormwater Conveyance System Analysis Report

Project Overview

This report details a stormwater conveyance system analysis prepared for the Borough of Ebensburg in Cambria County, Pennsylvania. The study was conducted by L. R. Kimball (CDI-Infrastructure, LLC) to provide a preliminary design for future stormwater improvements.

Key Objectives:

• Evaluate existing pipe capacities throughout the borough.
• Propose a preliminary designed storm sewer conveyance system to remedy deficiencies.
• Create a master planning tool to assist the Borough in making informed decisions regarding storm sewer improvements.

Scope Limitations:

• The analysis is restricted to the conveyance system only and does not address outflow impacts or stormwater management.
• The study area is limited to developed areas within the Borough and does not extend beyond the former Pennsylvania Railroad grade (now the Ghost Town Trail).
• This report serves as a planning tool and does not represent a final design.

Watershed Analysis

The analysis identified three distinct watersheds based on the natural terrain of the borough:

• Watershed A: Flows from Highland Avenue south and contributes to an unnamed tributary flowing under Center Street in the Uni-Mart area.
• Watershed B: Flows from Highland Avenue in a southeasterly direction, contributing flows to Howells Run and Lake Rowena.
• Watershed C: Flows north from Highland Avenue to an unnamed tributary that flows east and eventually reaches the Ebensburg water reservoir.

Data Sources

Information for the analysis was gathered from:

• Cambria County aerial photography.
• Borough mapping.
• Information from past projects completed by Kimball in the area.
• Site visits performed by Kimball to verify existing site conditions.

Report Structure

The full document includes the following sections:

• Project Description
• Drainage Area Map
• Borough Map
• Stormwater Management Models
• Hydrology and Hydraulics
• Assumptions
• Watershed Descriptions
• Preparer's Experience and Training

Appendices:

• Appendix A: Calculations and Supporting Documentation.
• Appendix B: Approximate Quantity Takeoffs & Probable Cost Construction Opinions.