Upper Arkansas River Restoration Project; Leadville, Co. (2009-current)
Stream Channel Design /Geomorphic Assessment/ Stream Channel Surveys/ Hydrologic, Hydraulic and Sediment Transport Analysis/Bank Stabilization Design The riparian areas and stream channel along this reach of the Arkansas River have been damaged by historic mining activities in the upstream watershed that have deposited contaminated sediments along the channel floodplain denuding vegetation and leading to excessive [...]
Dam Removal/ Tidal Estuary Restoration Bangor Navy Base, Kitsap Peninsula, WA (2009-current)
Geomorphic Assessment/ Stream Channel Surveys/ Hydrologic, Hydraulic and Sediment Transport Modeling/Stream Channel Design As a mitigation measure the Navy is planning to re-establish two tidal estuary systems to the Hood Canal and Puget Sound, by removing existing earthen fill roadway dams at the Cattail (8.5 acres) and Devils Hole (14.3 acres) lakes. These lakes have [...]
Debris Flow and Dam-Break Analysis, Cedar River Watershed; King Co., WA. (2009-current)
Geomorphic Assessment/ Hydrologic, Hydraulic and Sediment Transport Analysis HydroGeo provided a base-line geomorphic assessment, debris flow risk, and dam break analysis for a steep ravine tributary to the Cedar River. A residential development is planned for a plat at the bottom of the ravine and there is a 2 acre stormwater detention basis at the [...]
Geomorphic Assessment and Stable Channel Design for Culvert Replacement Projects in the Martha Creek Watershed; Snohomish Co., WA (2009-current)
Geomorphic Assessment/ Hydrologic, Hydraulic and Sediment Transport Analysis/Culvert Design HydroGeo provided a base-line geomorphic assessment, hydraulic and sediment transport analysis and design recommendation for the potential replacement of eight existing culverts along 7100 feet of channel on Martha Creek and urban watershed in the Seattle Metro Area. The analysis considers flooding, channel stability and salmon [...]
Geomorphic Assessment of Channel Stability for Storm water Flow Control Standards in the Mill Creek Watershed; Clark Co., WA. (2009-current)
HydroGeo was contracted to provide expertise in the analysis and interpretation of channel stability in an urbanizing watershed in the Portland metro area. Clark County is using this data to determine threshold flow standards for storm water detention criteria on a watershed basis. HydroGeo teamed with Otak Inc. to provide hydrologic, hydraulic, sediment transport and [...]
Berryessa Creek Stream Restoration; Milpitas, CA. (2007-current)
Geomorphic Assessment/ Stream Restoration Design HydroGeo provided design channel dimensions, pattern, and profile including channel width, depth, slope, and meander geometry for 4500 linear foot stream restoration project proposed by the U.S. Army Corps of Engineers (USACE) and the Santa Clara Valley Water District (SCVWD) on Berryessa Creek. The purpose of this project is to [...]
Urban Geomorphic Assessment of Upper Penitencia Creek and Berryessa Creek; San Jose, CA. (2004-current)
Geomorphic Assessment/ Stream Channel Surveys/ Hydrologic, Hydraulic and Sediment Transport Modeling Degradation of urbanized streams is a major concern for the Santa Clara Valley Water District (SCVWD); this project incorporated field data and numerical modeling to elucidate the primary causes of channel instability in two heavily urbanized watersheds. Project elements included historical aerial photo analysis, [...]
Watershed Rehabilitation Sediment Continuity Assessment Yalobusha River Basin; Northern Mississippi (2002-2004)
Geomorphic Assessment/Stream Channel Surveys/ Hydrologic, Hydraulic and Sediment Transport Modeling We developed watershed scale sediment impact assessments and sediment transport models using HEC-RAS Sediment Impact Assessment Methods (SIAM) to determine existing conditions and the effectiveness of a proposed $300 million U.S. Army Corps of Engineering watershed stabilization project to reduce watershed sediment yield and improve [...]
Channel Hydraulics Study Judy’s Branch Creek; St Louis, Missouri (2007)
Hydrologic, Hydraulic and Sediment Transport Modeling We conducted a Monte Carlo simulation uncertainty analysis of channel hydraulics using HEC-RAS models to quantify uncertainty and sensitivity of hydraulic parameters to hydrographic survey error to assist with a watershed scale stream rehabilitation design and planning. Future peer-reviewed publication of the research is anticipated. Client: Cottonwood Research LLC [...]
Yazoo River Basin bank stability field data collection and analysis- Northern Mississippi (2002-2003)
Geomorphic Assessment/ Stream Channel Surveys, Hydrologic, Hydraulic and Sediment Transport Modeling We conducted stream bank stability assessments and collected soil samples to assess non-point phosphorus loading from unstable watersheds and stream channels in the Yazoo Basin of northern Mississippi. Quantifying annual sediment and chemical constituent loading due to bank failure, gully formation, and overland sediment [...]
Step-Pool and Cascade Channel Design for Six streams in the I-90 Snoqualmie Pass East Corridor: Hyak to Keechelus Dam; Snoqualmie Pass, WA. (2007-current)
Geomorphic Assessment/Stream Channel and Culvert Design/ Hydraulic and Sediment Transport Modeling This project consisted of geomorphic assessment, bed material sampling and step pool/cascade surveys for six streams in the Western Cascades near Snoqualmie Pass WA. This database along with sediment transport and scour analysis were used to design six new culvert and bridge crossings along [...]
Swamp Creek Geomorphic Monitoring and Channel Design; Kenmore, WA (2007-2009)
Geomorphic Assessment/Stream Channel Surveys/ Hydrologic, Hydraulic and Sediment Transport Modeling/Engineering Design This project included baseline geomorphic data collection including: bank stability assessment, bankfull channel characteristics, sediment sources, stream habitat condition, woody debris and measurements of bed sediment using pebble count and bulk sampling techniques to provide geomorphic data for a large scale stream restoration design [...]
Johnson Creek Flood Mitigation and Channel Restoration; Portland, OR (2008-current)
Geomorphic Assessment/Stream Bank Stability Analysis/Channel and Floodplain Engineering Design Working with the City of Portland Bureau of Environmental Services the primary goal of this project is to reduce nuisance flooding of Johnson Creek in the Lents Neighborhood of Portland. Through the City’s Willing Seller’s Program, they have acquired 19 acres of floodplain properties. The design [...]
Paine Field Drainage Inventory; Mukilteo, WA (2008)
Geomorphic Assessment/Stream Channel Surveys This project included assessment of surficial geology, bank stability, bankfull geometry, sediment sources, and valley morphology for 6 miles of urban stream in the Puget Sound Area. It also included mapping of channel alignments, measurement of channel capacity and stream bed gradient for the streams. The resulting products documented the spatial [...]
Salmon Creek Stream Reconstruction and Stabilization; Clark County, WA. (2007-2008)
Geomorphic Assessment/Engineering Design/Construction Management This project provided stream stabilization and fish passage on Salmon Creek above and below Highway 99. Historically this was the location of a 7-foot headcut held in check with sheet piling and concrete. We created a design that eliminated the headcut and stabilized the channel utilizing constructed boulder riffles and pools [...]
Santiam-Albany Canal Project; Albany, Oregon (2007-2009)
Geomorphic Assessment/Stream Channel Surveys/ Hydrologic, Hydraulic and Sediment Transport Modeling/Engineering Design/Bank Stabilization Design Collected and analyzed GIS based field data to provide a geomorphic approach to addressing severe bed and bank erosion along 18 miles of the Albany Canal from the South Santiam River to the discharge point on the Calapooia River near Albany, OR. [...]
May Creek Habitat Restoration Project; King County, Washington (2007-2008)
Geomorphic Assessment/Stream Channel Surveys/ Hydrologic, Hydraulic and Sediment Transport Modeling This project involved collaboration with GeoEngineers and Mid Sound Fisheries Enhancement Group for King County to evaluate and recommend fish habitat improvements that also mitigate chronic flooding along May Creek in King County. The goal of the project was to identify various habitat improvements that [...]
Cedar Creek Culvert Replacement and Habitat Improvements; Sherwood, OR. (2008)
Geomorphic Assessment/Stream Channel Design/ Hydrologic, Hydraulic and Sediment Transport Modeling A fish barrier was identified at this culvert crossing. The project consisted of replacing the culvert with a bridge to allow fish passage and habitat improvements. Channel planform and gradient were designed to ensure a smooth channel transition in the low gradient anastomosing system. Large [...]
Pilchuck River Bank Stabilization; Snohomish County, WA. (2008)
Bank Stabilization Design/Large Woody Debris Stability Analysis The goal of this project was to protect a buried water main along the outer bank of a meander bend on the Pilchuck River. The proposed design incorporates bioengineering, large woody debris (LWD) and stream boulders to provide bank stabilization as well as in-stream habitat elements. Design tools [...]
Our Services Include
Our Services Include :
- Watershed assessment and GIS mapping
- Fluvial Geomorphology
- Hydraulic design
- HEC-RAS and HEC-HMS modeling
- Stream and lakeshore bank stabilization
- Design of aquatic habitats
Brush Creek Culvert Replacement; La Grande, OR. (2007)
Culvert Design/Channel Design/Hydrologic and Hydraulic Modeling This culvert passing under Interstate I-84 in eastern Oregon was identified as impaired infrastructure by the Oregon Department of Transportation (ODOT) in need of replacement. Field investigations and surveys coupled with hydraulic modeling were used to design a new 350 ft long culvert at the site that incorporated an [...]