FIT Proposal April 29, 2015

Levee & Dike Inventory Data Development and Creation of Statewide Geodatabase

Photo: Outlier Solutions Inc. and Lighthawk

Steve Lucker (DLCD) and Jed Roberts (DOGAMI)

FIT Proposal April 29, 2015

Overview of Proposed Work

1.New Levee & Dike Data Development• Levee/dike centerlines• Diking districts• Areas protected by levees/dikes

2.Compilation of New and Existing Data• New statewide geodatabase to be published by

DOGAMI and hosted on Oregon Geospatial Data Library

FIT Proposal April 29, 2015

Definitions (for our purposes)

Levee: A structure built and engineered for the purpose of preventing or controlling flooding of areas adjacent to flood-prone waterways.

Dike: A feature that provides some level of flood control (often minimal) to areas adjacent to flood-prone waterways.

Diking District: A taxing district that pools tax funds from property owners to maintain levees or dikes.

Protected Area: An area behind a levee or dike that receives some level of protection during flood events.

FIT Proposal April 29, 2015

Existing Levee & Dike Inventories

1.Estuarine Inventory (2011)• Entire Oregon coastline and estuaries

2.Lower Columbia River Corridor (2012)• From Pacific Ocean to Bonneville Dam• Funded by Lower Columbia River Estuary

Partnership

DLCD’s Oregon Coastal Management Program

FIT Proposal April 29, 2015

Proposed Study Area for Data Development

FIT Proposal April 29, 2015

Proposed Data Development Methodology

• Levee/Dike Centerlines• Geometry: Features will be located through visual analysis of

lidar. Topo maps, soil maps, orthos, etc. will help. Locations will be vetted against local expertise and some field visits.

• Attributes: Will include type (man-made, natural, etc.), min and max elevations, adjacent water body, jurisdiction, hydrologic unit, manager, diking district, verification, and base image source.

• Diking Districts• Geometry: Features will be mapped from assessor data. Visits to

county offices will be needed to find diking district records.• Attributes: Will include name, year established, status, contact

information, etc.• Protected Areas

• Geometry: Areas will be mapped by using lidar to delineate low-lying areas behind levees and dikes.

• Attributes: Will include tax lots, land ownership (private, state, etc.), acreage, jurisdiction, and hydrologic unit.

FIT Proposal April 29, 2015

Proposed Deliverables

1.Levee and Dike Inventory Statewide Geodatabase• Levee and dike centerline layer• Diking district layer• Protected areas layer• Feature level-metadata (Oregon FIT compliant)• Hosted on Oregon Geospatial Data Library

2.DOGAMI Publication• Open-file report describing methodology and

compilation• Map plate of inventory coverage

FIT Proposal April 29, 2015

Relationship to Oregon Framework

• Hazards FIT• Levee/Dike element falls under the Hazards

theme due to its close relationship to flood hazards

• Preparedness FIT• Provides an authoritative dataset of known

quality and completeness for the Preparedness Data Catalog

• Biosciences FIT• Much like fish passage barriers (culverts,

bridges, etc.) levees and dikes act as barriers to habitat, in this case off-channel wetlands

FIT Proposal April 29, 2015

Expected Benefits

• Many More Features Identified• USACE’s National Levee Database (the only data source

available for areas without inventories) identifies ~25 features along the coast; OCMP’s inventory identifies ~2,000 features for same area.

• Important for Floodplain Management• Many agencies have a need for knowing where flood

control structures exist, including OWRD, DLCD, DOGAMI, USACE, FEMA, NRCS, National Weather Service.

• Important for Ecological Restoration• Can help identify and prioritize restoration efforts to

breach/remove levees and dikes to re-connect off-channel habitat for salmonids; helps DSL, ODFW, OWEB, watershed councils, BPA, NRCS, USFS, and BLM.

FIT Proposal April 29, 2015

Proposed BudgetBudget to Complete Core Study Area (Optional Increments Completed if Possible)

Item Description Time Cost

Flood Mapping Coordinator

Project Management 0.50 months $4,000Independent Review

Coordination0.25 months $2,000

Metadata Review 0.10 months $800Publication Preparation 0.50 months $4,000

GIS Analyst

Geometry and Attribute Creation

5.00 months $32,500

Field Verification 0.50 months $3,250Database Consolidation and

QA/QC0.25 months $1,625

Metadata Authoring 0.25 months $1,625Publication Preparation 0.50 months $3,250

Publications Coordinator Publication Preparation 0.25 months $2,000DOGAMI Subtotal $55,050

Indirect Costs 22.7% $12,496Total FIT Funds Requested by DOGAMI (for Core Study Area) $67,546

USACE match/leverage See Partner Contributions Section $20,000Total Project Cost $87,546

Partner contributions: USACE Portland District has committed to matching this project with up to $20,000. DOGAMI will expand the core study area to include optional priority areas, proportional to the amount received. For instance, if the full amount is received optional priority areas 1 and 2 will be added to the core study area.

FIT Proposal April 29, 2015

We Appreciate Your Consideration

Jed RobertsFlood Mapping CoordinatorOregon Department of Geology and Mineral Industries (DOGAMI)jed.roberts@dogami.state.or.us971-673-1546

Steve Lucker, Hazards FIT LeadNatural Hazards Mapping SpecialistOregon Department of Land Conservation & Development (DLCD)stephen.lucker@state.or.us503-934-0043