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Santa Cruz, CA
831.421.9291
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  Portland, OR
503.227.5979
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Hydrologic & Hydraulic Modeling, Analysis, & Gauging

20141006 135247Client: San Jose State University

Waterways is supporting Central Coast Wetlands Group by leading the design team in development of plans to construct a 30 acre managed wetland to treat irrigation runoff within the Elkhorn Slough Watershed.

0506 108 webClient: California State Parks- Diablo Vista District

The Mitchell Creek Riparian Restoration and Fish Passage Improvement Project provides for removal of four small dams and the decommissioning of defunct access roads along a reach of Mitchell Creek, within Mount Diablo State Park. The design includes approximately 400 feet of constructed roughened channel to provide fish passage through the grade transition created by the various impoundments. In addition to the fish passage improvements, the project removed aproximately 2,500 cubic yards of impounded sediments from upstream of the site to restore floodplain function and reduce local bank erosion. The design included the installation of large wood elements obtained on site to provide bank stability and enhanced pool development. Waterways provided construction oversight for the project.

pads during constClient: USFS- Lake Tahoe Basin Management Unit

Waterways, in coordination with the USFS Lake Tahoe Basin Management Unit (LTBMU) and Swanson Hydrology, has developed designs to restore the mainstem and tributaries of Cold Creek in the High Meadow Complex (HMC) near South Lake Tahoe, California. The basic restoration objective is to increase soil moisture within approximately 70 acres of meadow area by modifying the morphology and hydrology of the streams in a manner consistent with natural geomorphic processes. Work involves re-constructing approximately 8,700 linear feet of channel and raising the elevation of the streambeds by 2 to 4 feet. The project will significantly increase the diversity and density of meadow wetland vegetation species and shift some areas from seasonally dry and sparse mesic meadows to wet meadow conditions.

The project’s three-year construction plan was completed in 2012, with Waterways providing on-site construction observation.

kunzler1Client: Granite Construction Company

Waterways staff assisted Granite Construction Company with planning, designing, and permitting an off-channel gravel extraction project on the Kunzler Ranch property, located in Ukiah Valley at the confluence of Ackerman Creek and the Russian River. Waterways conducted hydrologic, hydraulic, and geomorphic analyses to assess flooding impacts, habitat development potential, and channel stability at the proposed project site during project-life and reclamation phases.

Picture1Client: U.S. Fish and Wildlife Service

This “Working Lands” project balances habitat improvement with improving or maintaining existing agricultural uses in a 300-acre sheep and cattle ranch on the tidal floodplain along the Coquille River in coastal Oregon. Conversion to pastureland at the site began in the early 1900s with the clearing of native forest, construction of levees and linear drainage ditches, and installation of tidegates, which were in disrepair and prevented active tidal flows and fish access to critical vegetated floodplain habitat. Waterways was contracted by the US Fish and Wildlife Service and the Coquille Watershed Association to support USFWS, ODFW, and the Coquille Watershed Association to design, permit, and implement the project. The project area is privately owned by a local family and will continue to function as a ranching operation following project completion. The project involves excavating new tidal channels, filling drainage ditches, installing large wood, re-establishing fish access to the floodplain, and building two large concrete box culverts with muted tidal regulator (MTR) controlled tide gates to allow managed tidal flows.

Hillsboro Figure with labelsClient: Latimer Environmental

The Hillsboro Landfill is a construction-demolition waste landfill situated on 400 acres south of Hillsboro, Oregon between SE Minter Bridge Road and the Tualatin River. With the landfill operations located at the northeast end of the property, the south and west sides of the property contain wetland mitigation sites adjacent to the Tualatin River. Waterways was retained to design an outfall from the constructed wetlands located at the south end of the property that provides a geomorphically stable discharge into the Tualatin River. 

2013 09 20 13 45 42 webClient: Oregon Parks and Recreation

Waterways Consulting recently completed a restoration plan for Jackson Creek and Netarts Creek for the OPRD at Cape Lookout State Park. The focus of the effort was to evaluate the hydrology, geomorphology, and habitat conditions of Jackson Creek, the principle stream that flows through Cape Lookout. Approximately 60 years ago, a portion of Jackson Creek was diverted to Netarts Bay to increase freshwater flows into Netarts Bay with the hope of improving the commercial oyster beds. Impacts associated with the diversion and associated flow split were addressed in the restoration plan as well as opportunities for enhancement of the Jackson Creek mainstem downstream of the diversion site.

post trail webClient:City of Watsonville

The CARE project includes an ADA compliant pedestrian and bicycle trail providing community access to through a riparian corridor along the Pajaro River, near its outlet to the Pacific. The trail was designed with a surface that could be easily maintained following periodic inundation and fine sediment deposition within the floodplain through which it traverses. The trail provides an outlet to a scenic overlook on the Pajaro River, as well as to a boat launching ramp.

09 024 kral DSC08888 webClient: Clean Water Services (CWS), Oregon Department of State Lands (DSL)

Waterways assisted Clean Water Services and Department of State Lands in the planning and design of a 20 acre mitigation bank in the Tualatin River Watershed to provide wetland, temperature, and salmon credits. In addition to providing purchasable credits, the project simultaneously tested a function-based accounting system developed by the Willamette Partnership’s Counting on the Environment program (http://www.willamettepartnership.org). This program was developed with the help of public, private, and non-profit stakeholders to create a shared accounting system for quantifying impacts and benefits to ecosystem services for application to ecosystem markets. The Partnership has completed a test version for water temperature, wetlands, salmonid habitat, and upland prairie that was applied to pilot projects. Half Mile Lane was one of the pilot projects that tested three of these services, and was the first pilot site that resulted in real-world transactions. The project tested not only the ecosystem credit calculator, but also the sequence of developing, selling and buying ecosystem credits.

hope survey053 webClient: American Rivers, Inc. & Placer County Resource Conservation District

Waterways was selected to develop and analyze alternatives for ecological restoration of the Hope Valley Meadow on the West Fork Carson River, with a primary goal of enhancing the full range of ecosystem services this highly visible and well-known meadow provides. The project area encompasses approximately 400 acres of the meadow within Upper Hope Valley, just east of Blue Lakes Road, Alpine County.

DSCN1337 Exist Channel webClient: MCS, Corp.

Waterways recently prepared detailed engineering plans and specifications to construct a wetland mitigation site in the historic floodplain of Yakima River in Washington. The site was historically leveled and channelized for livestock grazing before being purchased by the Bureau of Land Management (BLM). BLM has been managing the property to reduce invasive weeds for several years in anticipation of this project, which was initiated as a mitigation site for a nearby gravel mining operation with direct impacts to a nearby wetland.

P7080089 webClient: Coastal San Luis Resource Conservation District

Channel and riparian conditions along Tally Ho Creek within the project area have changed significantly over the last several hundred years. Pressure to utilize flat valley bottoms for agriculture and, later, suburban development, resulted in removal of much of the riparian vegetation, filling of wetlands, road building, and straightening and deepening of Tally Ho Creek. Cleared portions of the valley bottom now consist of single-family homes and Tally Ho Road. Tally Ho Creek has been confined to the eastern edge of the valley floor.

widdoes1 webClient: South Coast Habitat Restoration

South Coast Habitat Restoration contracted with Waterways to provide design services for the improvement of fish passage conditions at Widdoes Crossing, a private road crossing on Gobernador Creek. Fish passage conditions at the site were severely impacted by incision of the streambed below a concrete and boulder ford which created an 8 foot hydraulic drop.

trails2Client: City of Watsonville

Under Phase 1, Waterways staff designed a seven mile network of pedestrian and bicycle trails along the Watsonville Sloughs System, within the City of Watsonville. Our scope included the preparation of a Trails Master Plan, identification of opportunities and constraints, engineering feasibility assessment, hydraulic modeling, final plans and specifications, permit support, and construction monitoring. The trail designs were implemented successfully, creating public access footpaths and bicycle trails with trail segments that also provide Americans with Disabilities Act-compliant access. Design challenges included multiple slough crossings (boardwalks), retaining walls, and bridges constructed on peat soils within a complex hydrologic regime. Design of each trail segment offered opportunities for ecological restoration, including removal of exotic vegetation and re-vegetation with native communities.

For phase 2, Waterways created a Master Plan for over 25 additional miles of trails within and adjacent to the City of Watsonville. Waterways is currently preparing 100% designs for portions of the Phase 2 trails system.

 

15 015 Buena Vista Field Map NoOutletPts WebClient: Resource Conservation District of Santa Cruz County

Waterways is teaming with CMAG Geotechnical Engineers to assist the Resource Conservation District of Santa Cruz County and USFWS with the siting, design, and installation of multiple ponds to enhance and expand habitat for the endangered Santa Cruz Long Toed Salamander.

 

 

PA210029webClient: Necanicum River Watershed Council

Waterways was hired to develop an engineered solution to address a high priority fish passage site on the South Fork Necanicum. The project site consists of a 6-foot high diversion dam and intake structure. The objectives of the project were to provide unimpeded passage for all species and life histories of salmonids present in the South Fork, meet NMFS and NOAA Fisheries fish screening guidelines, and provide a reliable source of water to the City of Seaside according to their existing water right. Specific project tasks include preparing a set of alternatives for review by a technical advisory team, preparation of preliminary engineering drawings for the selected alternative, preparation of a water management plan that identifies potential changes in the operation and management of the diversion as a result of the modifications, and preparation of the final engineering drawings.

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