Collection, Conveyance, & Storage
Jones & Henry can assist your community in improving all aspects of a storm water drainage system.
As a community develops, it faces additional demands on its stormwater conveyance systems because of increased runoff from impervious surfaces.
A stormwater system usually has several components, including catch basins, storm sewers, creeks, stormwater detention ponds, lift stations, force mains, ditches, and drainage features to accommodate stormwater runoff.
Consequently, improving stormwater management is often one of the community’s most significant undertakings.
Quality
Jones & Henry has assisted many communities with their stormwater management programs, from designing new conveyance and storage systems to complying with recent federal and state stormwater quality standards and regulations.
We can help you develop and implement a stormwater management program. Our capabilities include:
- Developing a plan with measurable goals
- Mapping the stormwater system
- Creating a public education and participation program
- Identifying stormwater sampling sites
- Identifying funding sources for programs, including stormwater utilities
- Developing strategies to achieve compliance that include both structural and non-structural approaches
- Designing required structural Best Management Practices (BMPs)
- Developing a Soil Erosion and Sediment Control Plan
- Developing procedures for construction site inspection of stormwater control measures
- Participate in public meetings to discuss the technical aspects of the program and requirements
- Prepare handouts or brochures describing federal and state regulations and requirements
- Locate illicit discharges
- Provide language to a community’s legal counsel for the development of a storm sewer-use ordinance
Utility Development & Management
Jones & Henry is a leader in working with communities for their stormwater initiatives and partnering with communities of any size to develop and manage stormwater utilities
A stormwater utility is similar to a sewer or water utility, providing a service to the public and receiving financing through the regular billing of customers through user charges.
Process
When a community is considering developing a stormwater utility, we will first help you to:
- Identify current or existing stormwater costs
- Estimate future costs and needs from a Comprehensive Stormwater Master Plan
Next, we will review the options for your stormwater utility, including Flat Rate, Hydrologic Response Formula, and Equivalent Residential Unit (ERU), to determine which option is best for your community.
Storage
Jones & Henry has performed major stormwater storage studies that analyze the rainfall/runoff characteristics for watersheds up to 6,500 acres.
To alleviate downstream flooding, our firm makes various recommendations for the designs of retention/detention basins with overflow weirs, underground storage, existing weir structure modifications, and suggestions for removing repeatedly flooded structures.
Services
Jones & Henry has considerable experience with these types of projects and has assisted clients with the development of:
- Site maps
- Estimates of impervious surfaces and total area drained by each outfall
- Designs of stormwater retention basins based upon pre- vs. post-development conditions
- Stage-storage relationships utilizing computer modeling, stormwater Management Model (SWMM), and dynamic profiling
- Water quality analyses
- Quantitative data based on samples collected during storm events for required parameters
Storm System Modeling
Jones & Henry utilizes mathematical models to help communities to develop effective management strategies to reduce the impact of flooding.
Using solutions like the EPA’s Storm Water Management Model (SWMM), we can tailor the complexity of your model to obtain a comprehensive understanding of your storm system’s behavior and performance.
We can assist you in your stormwater management strategies to achieve the most efficient expenditure of capital resources, improve urban drainage in your community, and ease common flooding impacts.
Some specific activities we can help you with include:
- Model development
- Flow monitoring for model calibration
- Identifying deficiencies in your drainage system
- Proposing strategies for improvement
- Developing prioritized lists of improvements
- Providing cost estimates for improvements
- Training owner-employees in using modeling software
Services
Jones & Henry can assist your community in improving all aspects of a stormwater drainage system, including:
- Developing a Master Plan for system improvement
- Developing hydrologic/hydraulic models of the system to assess system deficiency and propose improvements
- Storm and sanitary sewer separation
- Design of storm sewers, culverts, and inlet structures
- Design of lift stations and force mains
- Design of detention ponds
- Oversight of construction
