Water Systems


Water resources is a broad concept that covers everything from water use planning to water management through conveyance structures. Canals, streams, siphons, pumps, irrigation, dams and storm drainage systems are all examples of water management features in which TD&H Engineering excels. A sound understanding of hydraulics, hydrology, and water rights and their impacts on our client’s project are important. Our clients include farmers, developers as well as state, local and federal agencies. In addition, we have a successful record working with irrigation districts and obtaining state and federal grants as well as assembling complete project funding packages.

Successful water and storm drainage system engineering requires more than design expertise. Most municipal and small community projects begin with the identification of funding and assistance to the municipality in preparing grant and loan applications. Just as important is the proper guidance from the engineer through the barrage of regulatory compliance issues, the timing of loan and grant programs, and proper assessment of cost-effective means to solve a community’s problems.

Stormwater management evaluates drainage basins to determine runoff and provides the design of conveyance and storage solutions to accommodate anticipated storm flows. The design of stormwater best management practices is also a critical aspect of each project designed by TD&H Engineering.

TD&H Engineers have extensive experience in evaluating and designing water source distribution, storage and treatment systems, as well as providing communities with safe and adequate water supplies for domestic, commercial, and industrial needs.

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Services Include:

  • Basin & Infrastructure Modeling
  • Certified Erosion & Sediment Control Lead (CESCL) Monitoring for Construction Projects
  • Dam Rehabilitation
  • Disinfection & Control Systems
  • Distribution System Retention & Replacement
  • Erosion & Sediment Control Plans
  • Evaluation of Existing & Future Collection & Conveyance Systems
  • Fire Flow Analysis & Hydrant Coverage
  • Flood Routing & Containment
  • Grant & Loan Procurement
  • Hydraulic Analysis & Design
  • Outflow Structure Design
  • Pumping/Booster Stations
  • Storage Tank Sizing & Structural Design
  • Storm Water Preparation & Management (e.g. SWPPP)
  • Stormwater Collection & Conveyance Systems & Site Grading Design
  • Stormwater Retention/Detention Ponds & Swales
  • Subsurface Stormwater Retention/Detention Facilities & Storage Facility Design
  • Surface & Conduit Conveyance Design
  • Water Master Plans & Preliminary Engineering Reports
  • Water Modeling of Existing & Proposed Systems
  • Water Rights
  • Water Treatment Facilities
  • Wells, Well Houses, & Water Supply
  • Wetland Mitigation



Recent Water Systems Projects

  • Water Storgate Reservoir Recoating, Eastern Washington University

  • City of Leavenworth Commercial Street Improvements

  • City of Livingston Engineering Services

  • Downtown Bozeman Streetscape

  • Big Sky Town Center Residential & Commercial Complex

  • City of Belgrade Engineering Services

  • Meadows RV Park

  • Student Recreation Center, Eastern Washington University

  • Greenacres Middle School Improvements

  • Avista Utilities Little Falls Dam Headgates Evaluation

  • Water Reservoir and Transmission Mains

  • Municipal Water Tank #10

  • Municipal Water Distribution System Improvements

  • Town of Ione (WA) 10th Street Water Main

  • St. Joseph Regional Medical Center- Central Energy Plant