Egret Marsh Concrete Flow Way for Algal Nutrient Removal

This project consisted of the reconstruction of an approximately 4.4-acre flow way designed to purify water from a nearby drainage north relief canal. The diverted water flows over the sloped flow way and undesirable nutrients are absorbed by algae growth on the flow way. The purified water is then pumped back into the canal. 

GFA Role
  • GFA provided initial geotechnical services including performing soil borings within the existing earthen flow way and providing recommendations for preparation of the upper soils for the new concrete flow way.
  • During construction of the new flow way, GFA performed extensive soil density testing and concrete testing. Concrete test cylinders and concrete unit weight tests were performed on over 100 samples.