Water Resources

Capturing and reusing water is vital to our communities

Water is one of the most precious resources on the planet and is the nexus of many efforts, including urban population sustainability, civil infrastructure development, environmental restoration, and long-term planning. Cycles of flood and drought, climate variability, eroding streams and shorelines, pollution, increased demand for limited supply, and stringent environmental and security regulations continue to increase the pressure on shared water resources.

CWE partners with clients to thoughtfully develop sustainable solutions that address the issues raised by regulatory complexities and competing interests for watershed management, flood control, coastal engineering, environmental restoration, and sedimentation. We help our clients with the planning, permitting, and implementation of water projects while minimizing impacts to the environment from conceptualization through construction.

We provide comprehensive and specialized hydrologic, hydraulic, sediment transport, stream restoration, flood control, water quality, and coastal analysis services. We have completed complex studies for municipalities, engineering firms, industry, water conservation districts, and local, state, and federal government agencies.

CWE’s stormwater expertise is built on decades of experience providing practical solutions to municipal, industrial, and development clients. We emphasize conceptualization and implementation of unique and advanced multipurpose project alternatives, while providing exceptional client satisfaction, which makes us a nationally-recognized stormwater and watershed management firm.

Backed by years of experience, we are committed to managing our clients’ water resources studies by utilizing comprehensive expertise that incorporates in-depth understanding of engineering and scientific principles, computer and statistical modeling, and scientific investigation processes. Our professionals include experts in hydrology, hydraulic analysis and design, river restoration, levee analysis, geomorphic analysis and sediment transport, fish passage, stormwater, surface water, and coastal analysis with significant experience performing detailed analyses for public works and environmental restoration and compliance projects.

Hydrology & hydraulic studies

Sediment transport & stream mechanics

Fish passage analysis & engineering

Floodplain management

FEMA flood insurance studies

Bridge hydraulics & scour analysis

Hydraulic computer modeling

Water resources planning

Flood control engineering

Retention/detention basin facility design

Stormwater management

Water quality assessments & studies

Watershed management plans

Water quality monitoring

BMP & LID planning & design

Regulatory compliance and support

Erosion control

Stream channel restoration

Engineered wetlands

Water quality master planning

SUSMP & WQMP development

Client Testimonials

“CWE demonstrated exceptional project management and civil engineering design expertise. They effectively completed PS&Es for this complex system on a compressed schedule and met all project and grant funding timelines and requirements. The PS&Es delivered were of outstanding quality and minimized the need for construction change orders. CWE’s Project Manager was very knowledgeable and had a firm handle on all aspects of the project. I strongly recommend using CWE for any civil engineering projects you may be considering.”

LA Sanitation – City of Los Angeles

“I truly appreciate you making sense of what was done in the past. Yes, Azusa is grateful that CWE now holds the current contract.”

City of Azusa

“No doubt about it. CWE does good work. It’s been a pleasure working with (and learning from) you.”

City of Santa Monica

“CWE did an exceptional job of explaining issues and providing engineering data to stakeholders to move the project along. CWE provided work that exceeded our expectations in terms of quality, accuracy, and innovation. The project reports and submittals were exemplary, submitted on-time, and when needed, comments were addressed in a timely manner.”

City of Torrance

“Jason has exhibited a deep understanding of stormwater management practices and IGP requirements. I am confident in both Jason’s technical understanding, as well as his ability to clearly and effectively communicate site-specific implementation efforts, BMP management responsibilities, and Permit regulations. The City of Burbank relies on Jason Pereira for IGP Permit compliance assistance, his important understanding of industrial stormwater management practices, and his training ability.”

City of Burbank

“The quality of CWE’s work was excellent. CWE staff were very knowledgeable and up to date. Their work products were very accurate and were professionally presented.”

Los Angeles County Flood Control District

“Thank you for all the information. It worked out tremendously. They liked the concept for Burton Way very much.”

City of Beverly Hills

“Work was beyond expectations. CWE has been amazing with their ability to be nimble with major shifts in priorities. They have been talented in transcribing the wishes of non-expert management and elected folks into quality scientific reporting and planning.”

City of Sierra Madre

“CWE consistently delivers innovative, tailored solutions that achieve our objectives and exceed our expectations.”

City of Santa Monica, Public Works Department

“CWE is a professional, highly responsive firm that consistently strives to solve problems, respond to client needs, share expertise in the client’s best interest, and assist clients navigate complex regulations and the most cost-effective compliance measures.”

City of Commerce

“The CWE team worked diligently to complete the project within the project budget and schedule. The CWE team delivered a set of implementable projects, coordinated with residents and businesses to ensure their buy-in for the implementation of the project at the selected properties.”

LA Sanitation – City of Los Angeles

“After working with CWE on our Hermosa Beach Pier Repair Water Quality Monitoring Project, we are confident of their technical expertise and ability to provide exceptional, client-focused project management services. We recommend CWE’s leadership, dedication, innovation, timely delivery, expertise, and adaptive style without hesitation.”

City of Hermosa Beach

“CWE has provided exceptional water quality administration services to assist the City of Glendora with IGP and MS4 NPDES Permit compliance. We have been very pleased with the quality of work and responsiveness that CWE has shown throughout our time working with them. I recommend CWE without hesitation.”

City of Glendora

“We really appreciate all of the hard work and efforts made to complete the documents prior to the deadline. The CWE staff did a great job!”

City of Monrovia

“I strongly recommend using CWE for any civil engineering projects you may be considering.”

LA Sanitation – City of Los Angeles

“CWE provided excellent communication and written documentation of project activities throughout the project. CWE demonstrated responsive project management and cost control especially given the extremely tight schedule requirements in the statement of work.”

U.S. Fish and Wildlife Service

“CWE has provided exceptional consulting services to the County of San Bernardino and the Mojave River Watershed Group. For each assigned project, CWE has been able to hit the ground running and deliver projects, on time and within budget. We have been especially pleased with the quality of their work and the ability of the CWE team in overcoming project obstacles. I recommend CWE without hesitation.”

San Bernardino County Department of Public Works

“WOW! Thanks for the quick turnaround. I knew there was a reason I like CWE.”

Confidential Southern California Utility Provider

“It has been my pleasure to rely on CWE as a valuable ‘go to’ consultant for drainage and regulatory services for four consecutive fiscal years. No matter the need or deadline, CWE promptly and efficiently responds with valuable work products that address the question at hand and also provides the City with useful recommendations to address those solutions that may take longer to implement.”

City of Carson

Lisa Haney found your Stormwater Pollution Prevention Plan to be by far the most professional and well-done she’s ever reviewed.”

Orange County Sanitation District

“Having interacted with the CWE team on multiple contracts, they continue to be very responsive and attentive to the project needs, delivering their professional services and expertise in a time-efficient and cost-effective manner. They exhibited strong commitment to the project’s success by executing all phases of the project, from planning through design, and construction. It has been a pleasure working with CWE and we look forward to our continued partnership on future projects.”

North East Trees

“Thanks Gerry. Your pragmatic approach saves us all time and is extremely efficient in the end!”

City of Huntington Park

“CWE worked diligently to complete the project within the project budget and schedule. The CWE team delivered a constructible project and assisted in the coordination between the city and its residents to ensure their buy-in for the implementation of the project at each selected project location.”

City of Rancho Palos Verdes Department of Public Works

“Thanks again. This will really put Fontana on the map in the WQMP world.”

City of Fontana

“You've got a great team working for you and I can see their dedication through their hard work.”

City of Los Angeles

“CWE’s focus on saving client dollars became very evident while performing fish passage analysis and stream restoration design at the North Fork of Matilija Creek near Highway 33 at Postmile 15.7 in Ventura County. No matter the need or deadline, CWE consistently demonstrated leadership, management ability, innovation, and technical expertise.”

Caltrans District 7

“I recommend this engineering water works firm for any related IA projects.”

US Bureau of Indian Affairs

“CWE has been very good at completing their reviews on time.”

Public Works - City of Moreno Valley

Water Resources

City of Claremont

Foothill Boulevard Master Plan Implementation

Southwest Premier Properties, LLC

Placentia-Harvill Avenue Central Freight Lines (CFL) Logistics Terminal

City of Santa Monica

Engineering Design Street and Storm Drain Improvements

Los Angeles County Department of Parks and Recreation

Park to Playa Trail Bridge Design-Build

City of Torrance

Miscellaneous Water Main Replacements, I-153: 405/North High School Neighborhood

City of El Monte

Garvey Avenue Grade Separation Drainage and Landscape Improvement

City of Covina

Wingate Park Regional EWMP Project

City of Bell Gardens

John Anson Ford Park Infiltration Cistern Project to Capture Urban Runoff

City of San Fernando

Regional Park Infiltration Design and CM

City of Culver City

Mesmer Low Flow Diversion

City of Culver City

Washington Boulevard P3 Urban Runoff Diversion

City of Commerce

Coordinated Integrated Monitoring Program Implementation

Rio Hondo-San Gabriel River Water Quality Group

Coordinated Integrated Monitoring Program Implementation

San Bernardino County

NPDES Phase II MS4 Permit Mojave River Watershed Group

San Bernardino Co. Flood Control District

Stormwater Resource Plan

LA Sanitation - City of Los Angeles

University Park Rain Gardens Design-Build

City of San Gabriel

FOG Inspections

City of Torrance

Stormwater Basin and Treatment Wetlands Enhancement

City of Visalia

Public Facility Master Plans for Stormwater and Sanitary Sewer Collection

Confidential Southern California Utility Provider

Stormwater Permitting and SWPPP Services

Los Angeles County Department of Parks and Recreation

Earvin Magic Johnson Park

City of Los Angeles Architectural Division

Los Angeles River Bikeway and Greenway

City of Los Angeles

Proposition O BMP Optimization Water Quality Monitoring

California High-Speed Rail Authority

Caltrans District 7

City of Beverly Hills

Burton Way Median Green Street

City of Glendora

FOG Inspections and Reporting

City of Huntington Park

MS4 NPDES Permit Inspection Services

City of Los Angeles

Garvanza Park Rainwater Capture and Use

Client Testimonials

Creating a Better Tomorrow, Today™