Latham Ditch Diversion

Latham Ditch Headgate

Latham Diversion Structure and Headgate

Fish Passage

Adjustable Gates in Use

Adjustable Gates

Radial Gate

Project Summary

The Middle South Platte River Alliance and the City of Evans received a HUD Community Development Block Grant Disaster Recovery (CDBG-DR) resilience planning grant to perform a feasibility study and design project intended to enhance the environmental, irrigation function, and recreational benefits associated with Lower Latham Diversion structures.  Anderson Consulting Engineers (ACE) was selected to evaluate, design, and provide construction oversight for all elements associated with this Latham Ditch Diversion project.


    • Client/Owner: Middle South Platte River Alliance (MSPRA), City of Evans, Lower Latham Ditch Company
    • Project Location: Evans, Colorado
    • Approximate Project Cost: $3.3 Million
    • Project Completion Date: May 2019
    • Project Components:
      • Assessment of existing information including geology, ecology, hydrology, hydraulics, geomorphology, soils, water quality conditions, and sediment transport data
      • Stakeholder coordination including the Lower Latham Ditch Company
      • Hydraulic evaluation and design of a fish passage, 235 feet of Obermeyer gates, a 20’W radial gate, 435 foot concrete capped sheet pile weir, and bank stabilization measures
      • Formulation of cost estimates
      • Preliminary and final design permitting including: NEPA/SHPO, Clean Water Act Section 404, Weld County Floodplain Development Permit, USFWS Section 7 Consultation, and CDHPE (Section 401 of Clean Water Act and NPDES)
      • Preparation of final design drawings, cost estimates, and contract documents
      • Construction oversight for all construction related activities through project completion and training of ditch staff in operation of installed gates


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