Upper Laguna Creek Upper Laguna Creek Planning ProcessPlanning Process

Upper Laguna Creek Upper Laguna Creek Planning ProcessPlanning Process

ULCC MissionULCC Mission

To collaborate in theTo collaborate in the

design of a multi-usedesign of a multi-use

corridor along Uppercorridor along Upper

Laguna CreekLaguna Creek

The Vision: The Vision: The Laguna Creek Regional ParkwayThe Laguna Creek Regional Parkway

Broad ParticipationBroad Participation

Planning departmentsPlanning departments Public works agenciesPublic works agencies Park districtsPark districts Regulatory agenciesRegulatory agencies Environmental advocatesEnvironmental advocates ResidentsResidents Landowners/DevelopersLandowners/Developers

Benefits of a Coordinated Benefits of a Coordinated Watershed ApproachWatershed Approach

Avoids inter-project conflictsAvoids inter-project conflicts Reduces duplication of effortReduces duplication of effort Avoids late-stage redesigns and delaysAvoids late-stage redesigns and delays Provides space for future infrastructureProvides space for future infrastructure Streamlines environmental permittingStreamlines environmental permitting Conserves riparian habitat and connects Conserves riparian habitat and connects

multiple preservesmultiple preserves

Upper Laguna Creek CorridorUpper Laguna Creek CorridorSample SectionSample Section

Trails and Bridges

Trails and Bridges

Vernal Pool Preserves

Vernal Pool Preserves

RiparianHabitat

Corridor

RiparianHabitat

Corridor

Corridor for Future

Infrastructure

Corridor for Future

Infrastructure

Interceptor Sewer

Interceptor Sewer

Stormwater Treatment/

Flood Control Facilities

Stormwater Treatment/

Flood Control Facilities

Corridor Elements

Corridor Elements

Stormwater Management Stormwater Management GoalsGoals

Manage RunoffManage RunoffPre = PostPre = Post

Goal: Match the pre-development Goal: Match the pre-development hydrographhydrograph

How?How?

Hydrogeomorphic ModelHydrogeomorphic Model

1.1. Assess existing conditionsAssess existing conditions2.2. Project future impacts Project future impacts 3.3. Set performance standards Set performance standards 4.4. Identify management strategiesIdentify management strategies

Decrease impervious surface areaDecrease impervious surface area Promote retention & infiltration (on-site and off-Promote retention & infiltration (on-site and off-

site)site) Use flow duration controls to meter flows to creekUse flow duration controls to meter flows to creek

High-value Resource AreaHigh-value Resource Area

Flow Flow Duration Duration Control Control BasinBasin

Urban Urban RunoffRunoff

Laguna Laguna CreekCreek

FDC FDC BasinBasin

Bio-infiltration SwaleBio-infiltration Swale

LIDLID

Integrating LID & flow-duration Integrating LID & flow-duration control strategiescontrol strategies

On-Site BMPsOn-Site BMPs

LIDLID

On-Site BMPsOn-Site BMPs

On-Site BMPsOn-Site BMPs

WetlandsWetlands

Urban Urban RunoffRunoff

Urban Urban RunoffRunoff

Off-Site BMPsOff-Site BMPs

WetlandsWetlands

Facilitating the Paradigm ShiftFacilitating the Paradigm Shift

Support collaboration & info sharingSupport collaboration & info sharing Create incentivesCreate incentives Use pilot project to demonstrate approachUse pilot project to demonstrate approach Assist practitioners with their projectsAssist practitioners with their projects Evaluate economics: cost/benefit analysisEvaluate economics: cost/benefit analysis Contribute to solution-oriented permitsContribute to solution-oriented permits