MEADOW PARK: PHASE 2, SAINT VRAIN CREEK
- Increased flood conveyance through expanded floodplain benches and a split flow channel.
- The first collaborating effort with Colorado Park and Wildlife to combine whitewater recreation improvements with fish and aquatic habitat enhancements.
- S2o’s fish passage techniques are being researched and analyzed through a series of three dimensional hydraulic models by Colorado Park and Wildlife aquatic research scientists.
S2o teamed with Ripley Design to complete Meadow Park. The project included all in-stream work and the portion of the park that was damaged by September, 2013 flood and not covered under Phase 1. The park is unique in that the design increased flood conveyance, met the needs of existing and proposed recreational users, and was also the first collaborative project between in-stream recreational enthusiasts and the Colorado Park and Wildlife aquatic research scientists.
S2o was the lead designer and engineer for all river components and the lead engineer for the park site plan. S2o’s stream restoration design included a grouted rock ramp diversion structure for the Lyons Ditch and eight grouted rock ramp whitewater park structures. All grouted rock ramp structure designs implemented a variety of techniques to facilitate fish passage. These techniques included a low slope notch to decrease velocities at critical low flows, grout set six to eight inches below rock surfaces to provide interstitial spaces, and ramp stages set at alternating elevations to reduce velocities on the structure shoulders as stages increase with higher flows.
S2o’s design also included the restoration of fish habitat. In the reaches between the whitewater park structures, riffles were maintained to increase fish and macro-invertebrate habitat. An adjustable split flow channel included a riffle pool sequence that incorporated large woody debris, random boulders, and stream barbs.