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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

fishladderClient: Boy Scouts of America, Monterey Bay Area Council

The Boy Scouts of America own and operate an 800-acre property on the Little Sur River that is used as a summer camp. A flashboard dam was installed in the 1950s to create an impoundment for recreational and educational uses. The seasonal operation of this dam impeded juvenile and adult steelhead passage at the site.

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.

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.

cor2 postClient: Santa Cruz County Resource Conservation District

Waterways staff prepared engineering plans and specifications for stabilization of approximately 100 linear feet of stream bank on Corralitos Creek in Santa Cruz County, California. The bioengineered bank stabilization included fabric encapsulated soil lifts contained within a log revetment structure. Logs were selectively harvested by thinning redwoods from an adjacent grove, thus reducing the cost and environmental impact of the project. Our staff performed construction supervision to ensure successful implementation. Revegetation has been successful and the bank now provides quality habitat in addition to controlling bank erosion and sedimentation in the creek.

Attiyeh PD   graphicClient: Land Conservancy of San Luis Obispo County

The Land Conservancy of San Luis Obispo County has identified a long-term plan to protect water supply and watershed lands on the Nacimiento River, upstream of Nacimiento Reservoir, through a strategy of conservation easements and direct land acquisition. Through this process, the landowner of the 8,300 acre Attiyeh Ranch, located just upstream of Nacimiento Reservoir, approached The Land Conservancy for assistance in developing a plan to protect his property, in perpetuity, for watershed protection and habitat conservation.

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.

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.

 

18 007 brookside2Client: Kennewick Man, LLC.

The Brookside Apartments are located adjacent to Kelly Creek just upstream of the Kane Drive culvert crossing in Gresham, Oregon. Kelly Creek, which flows through mixed low density residential and commercial areas before flowing into the pond at Mt. Hood Community College, has incised and is prone to lateral erosion and channel widening. This contributed to bank erosion along the right bank of Kelly Creek at the apartment property during high creek stage in 2017. This erosion threatens the stability of an adjacent apartment building.

20190715 172754 webClient: Cascade Environmental Group

Waterways has teamed with Cascade Environmental Group to develop, implement, and monitor a restoration plan for approximately 30 acres of riparian and bottomland forest along the Willamette River in the city of Gladstone.  The site encompasses a short, perennial tributary known as Rinearson Creek that is periodically backwatered from the Willamette River and provides rearing and off-channel refugia for a variety of species and life stages of salmon. 

DSC09338 smallClient: Columbia Soil and Water Conservation District

This project is located along the mainstem of the Clatskanie River, where the river transitions from a riverine to a tidal system. Past land use impacts have led to a degraded riparian corridor dominated by reed canary grass, less frequent side channel connectivity, and a lack of pool scour in floodplain and secondary channels.

syar1 aerialClient: Syar Industries, Inc.

GEOMORPHIC ANALYSIS OF THE MIDDLE REACH OF THE RUSSIAN RIVER
Waterways, in cooperation with Swanson Hydrology and Geomorphology, completed a detailed hydraulic, geomorphic and sediment transport analyses for the Russian River’s Middle Reach, near Healdsburg. This work focused on the effects of in-stream mining and other human activities on channel morphology and flood capacity. A chrono-sequence of topographic surfaces representing the channel and floodplain were analyzed to calculate volumetric changes in channel geometry over the past 20 years. Then, a hydraulic model was constructed along 5 miles of the Russian River to evaluate land use impacts on flood elevations.

IMG 0552 webClient: RCD of Santa Cruz

A watershed assessment prepared for the East Branch of Soquel Creek identified limiting factors for steelhead and coho production which included high sediment loads, lack of pools, low summer base flows, and high water temperatures. In 2013, the Resource Conservation District of Santa Cruz County contracted with Waterways to prepare a feasibility analysis and engineered designs for biomechanical bank stabilization of a large eroding cutbank and the creation of habitat enhancements along approximately 1,500 feet channel banks that were covered with unvegetated riprap, resulting in lack of habitat complexity or riparian cover.

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.

P2200031 webClient: Benchmark Resources

The pond construction at Pilarcitos Quarry included two bentonite-lined ponds within the Nuff Creek watershed, each designed to improve habitat for red-legged frogs. Waterways provided planning services to site the ponds, performed topographic and construction surveying, prepared preliminary and final designs, provided permit support, and supervised the construction effort.

 

20141029 085507Client: West Valley College

Waterways has provided comprehensive planning, grant writing, surveying, design, construction support, and post construction monitoring services for five distinct projects within the West Valley College campus.

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.

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. 

roughened channel at former dam webClient: Johnson Creek Watershed Council

Kelley Creek is a moderate gradient tributary to Johnson Creek that flows from south to north near the boundary between Clackamas and Multnomah Counties. The channel is incised and has been impacted by past land uses which have most likely straightened and ditched the channel to accommodate crossings and local and regional roads, limit flooding, and utilize adjacent areas, including historic floodplain, for agricultural use. Waterways was hired by the Johnson Creek Watershed Council (JCWC) to develop designs and help oversee construction of a fish passage project over an existing dam along Kelley Creek. The project site is located on an approximately 16- acre property that has been owned and managed for multiple generations. The property is primarily residential though the owner does graze cattle and the owner holds a water right for an off-channel pond that is primarily a landscape feature though historically it may have been used to store water for irrigation. Prior to project implementation, water entered the pond through a gravity fed system that consists of the approximately five-foot high diversion dam and intake pipe. This dam presented a total fish passage barrier for all fish species.

Site 2 Post Con webClient: Sandy Riverfront RV Resort, LLC.

The Sandy River RV Resort (Resort) is located just upstream of the confluence of Beaver Creek and the Sandy River in the City of Troutdale. Beaver Creek, which flows through mixed low density residential and commercial areas with multiple road crossings before flowing into the Sandy River, is prone to lateral erosion and channel widening. This contributed to bank erosion along the right bank of Beaver Creek at two sites on the Resort property during high creek stage in 2017. This erosion threatened the Resort infrastructure in addition to being a source of sedimentation to the stream which impacts threatened aquatic species and their habitat.

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.

Hat Construct WebClient: California Trout, Inc.

Lower Hat Creek is an important coldwater fishery and is a designated Wild Trout Fishery by the California Department of Fish and Wildlife. Decades of cattle grazing, the introduction of muskrats, and over fishing caused the degradation of riparian and aquatic habitat along lower Hat Creek. Waterways, in collaboration with Streeter Group and California Trout, Inc., completed designs to restore a reach of Hat Creek. The restoration measures included installing a 160’-long pedestrian bridge and trail, and relocating the parking facilities that improve angler access and reduce habitat disturbance.

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.

Side Channel Inlet with Buried Boulder Sill webClient: Wasco County Soil and Water Conservation District

Mill Creek is a moderately-sized tributary to the Columbia River that originates on the eastern slope of Mt. Hood and flows northeast through the City of The Dalles, Oregon. Urbanization along the lower two miles of Mills Creek in the City of The Dalles resulted in the simplification of the aquatic and riparian habitats. In 2011, The Dalles Watershed Council (DWC) commissioned an evaluation of the urbanized reach to assess land use impacts and identify opportunities for habitat restoration. Following the initial assessment, a preliminary engineering design was developed for the Honald/Buyers property. The preliminary design included excavation and connection of a historic side channel that had been partially filled, utilization of an existing side channel as a backwater alcove, installation of a precast spanning bridge across the reconnected side channel, and installation of large wood structures along the channels and floodplain to increase roughness and improve habitat conditions.

20130521 180504Client: Town of Truckee

Over the past 150 years, Trout Creek, a tributary to the Truckee River, has been impacted by development of the downtown, the railroad, and other land uses. These impacts have resulted in channelization and realignmentof Trout Creek, upsetting natural channel processes such as bed load movement, habitat creation, hydrology, and wildlife corridors through loss of riparian habitat. Despite past efforts to “control” Trout Creek, flooding has remained a significant problem. In addition, the biological and aesthetic value of the channel was degraded.

IMG 4542 webClient: American Rivers, Inc.

American Rivers performed an assessment of Alpine Meadows in the Carson River watershed, and identified Faith Valley as its highest priority meadow restoration due to its impairments and its popularity with recreational users for fishing, hiking, and camping. American Rivers hired Waterways to complete a baseline conditions assessment and develop designs for habitat improvement. The baseline assessment included topographic survey, modeling, geomorphic mapping, botanical and other assessments. The assessment determined that the primary cause of impairment in Faith Valley is channel incision and associated detrimental impacts, including bank erosion, lowered groundwater table, and degradation of meadow plant assemblages.

northmontereyClient: Resource Conservation District of Monterey County

Currently undeveloped portions of the North Monterey County High School Campus provide excellent locations for upland and wetland restoration projects that could facilitate educational opportunities.  Waterways is supporting Central Coast Wetlands group and the RCD of Monterey County by providing land surveying, preliminary design services, and permit support for proposed nature trails and wetland enhancement projects in support of Red Legged Frog and Santa Cruz Long Toed Salamanders.

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.

img 71585 webClient: Trout Unlimited

Under contract with Trout Unlimited, Waterways led design and construction phase engineering efforts for the removal of a fish passage barrier on San Clemente Creek, a major tributary to the Carmel River. Our design team included Streeter Group (structural engineer) and CMAG Engineering (geotechnical). Work included topographic mapping, hydraulic modeling, concept level design alternatives analysis, and development of final 100% level design drawings. Waterways coordinated with the Resource Conservation District of Monterey County to provide technical support for permitting efforts and then coordinated engineering support during project implementation in the summer of 2020.

gaviota webClient: South Coast Habitat Restoration

Waterways was retained by South Coast Habitat Restoration to prepare designs for improving fish passage at five barriers along Gaviota Creek. The sites are located north of Gaviota and directly adjacent to Highway 101. Each barrier is composed of a concrete grade control structure, originally installed to keep the creek from undermining Highway 101. Design concepts range from structural modification of individual weirs to complete removal and channel realignment.

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