Office for Coastal Management

Development of a Hardened Shorelines Classification for the Great LakesBrandon KrumwiedeGreat Lakes Geospatial CoordinatorCSS Inc on contract to NOAA Office for Coastal Management

Office for Coastal Management

Background

GLRI FA4: Coastal Systems GroupFocal Interest

1. Coastal Wetlands2. Project work in the littoral realm3. In water and upland

GLRI AP2 FA4: Littoral Processes Workgroup

Sediment Budget(FY17)

Hardened Shorelines

(FY18)

Great Lakes Resiliency StudyObjectives

1. Reduce vulnerability of coastal populations to future flooding, erosion, and storms.

2. Reduce vulnerability of coastal infrastructure to future flooding, erosion, and storms.

3. Reduce vulnerability of coastal ecosystems to future stressors.

4. Increase the availability of information using GIS to enhance local decision-making.

5. Promote the development of new tools and technology to provide innovative solutions.

Office for Coastal Management

Project Objectives● Collect and deliver a new baseline

hardened shoreline classification vector feature dataset and associated tabular data for the United States Great Lakes shoreline which can then be used for comparison in future studies.

● Understand where hardened shorelines play a role in identifying opportunities for littoral system restoration in an anthropomorphic system.

GLEAM 2012 medium-resolution vector dataset

Office for Coastal Management

Project Goals● Creation of a new baseline hardened shoreline vector

dataset at a mapping scale of 1:2,000 (1 cm equals 20 meters) leveraging the most current aerial imagery, elevation data, and related geospatial vector data

● Geospatial and reporting data to support other efforts:○ Great Lakes Coastal Resiliency Study○ Great Lakes Restoration Initiative○ Great Lakes Water Quality Agreement○ Great Lakes Region National Shoreline Management

Study○ Environmental Sensitivity Index Mapping○ State partners○ Academia

Office for Coastal Management

Project Status and TimeframeCompleted☑ Have held kick off meeting with contractors☑ Four pilot sites within Lake Ontario selected to start full data

processing☑ Initial data review in January 2019☑ Data processing completed October 2019Pending◻ Statistical summaries for each lake to be completed November 2019◻ Final report and metadata records to be completed January 2020

Office for Coastal Management

GIS Data DevelopmentGIS Data:● Final draft has been

reviewed● Single File

Geodatabase● Minor edits in

delineations● Minor corrections to

attribute fields

New Hardened Shoreline Classification: Shoreline Type

Office for Coastal Management

GIS Data DevelopmentAttribute Fields:

OBJECTIDShoreline_TypeStructural_Type_PrimaryStructural_Condition_PrimaryStructural_Type_SecondaryStructural_Condition_SecondaryNotesTownCountyStateVintageShape_Length

New Hardened Shoreline Classification: Shoreline Type

Office for Coastal Management

ComparisonUSACE 2012 ClassificationDominant

Classification(s):

Class 1Artificial, Park Land, Commercial or Industrial, Flat Coast

Office for Coastal Management

ComparisonNOAA Continuously Updated

Shoreline ProductDominant Classification(s):

Class 1Natural, Great Lake or Lake or Pond

Class 2Groin, Bare

Class 3Man-made, Bulkhead/Seawall

Office for Coastal Management

ComparisonNew Hardened Shoreline

ClassificationDominant Classification(s):

Class 1Artificial Depositional, Artificial or Constructed or Perched Beaches, Moderate Quality, 142/252/2

Class 2Artificial, Groins, Good Quality191b/221/1b

Office for Coastal Management

List of Shoreline Type Codes (Based on FEPS/LOSLR Shoreline Classification)100 - Sand or Cohesive Bluffs (Till or Lacustrine)

101 - Homogeneous Bluffs (sand content 0-20%)102 - Homogeneous Bluffs (sand content 20-50%)103 - Homogeneous Bluffs (sand content >50%)104 - Composite Bluffs (sand content 0-20%)105 - Composite Bluffs (sand content 20-50%)106 - Composite Bluffs (sand content >50%)107 - Sand Bluffs (composition unknown)108 - Cohesive Bluffs (composition unknown)

110 - Marine / Leda Clay Bluffs111 - Marine / Leda Clay Bluffs112 - Marine / Leda Clays with Sand Overburden

120 - Low Bank121 - Glacial Till Low Bank / Low Plain122 - Composite Low Bank / Low Plain123 - Sandy Low Bank / Low Plain124 - Leda/Marine Clay Low Bank /Low Plain125 - Creek Bank (appies to narrow creek channels where mapping extends inland)

130 - Baymouth Barrier Complex131 - Baymouth – Barrier (fronting wetlands or shallow embayments, estuaries)

140 - Sandy Beach / Dune Complex141 - Sandy Beach / Dune (relict deposits, areas with no new deposition)142 - Artificial Depositional (e.g., jetty, groin fill)143 - Natural Depositional (areas with active supply/deposition)144 - Erosional Beach (beach undergoing active erosion due to LST)145 - Pocket Beach

150 - Coarse Beaches151 - Gravel Beaches152 - Shingle / Cobbles153 - Boulder Beaches

160 - Bedrock (Resistant)161 - Bedrock (resistant) no overburden162 - Bedrock (resistant) with glacial overburden163 - Bedrock (resistant) with sand overburden

170 - Bedrock (Erosive)171 - Bedrock (Erosive) no overburden172 - Bedrock (Erosive) with glacial Overburden173 - Bedrock (Erosion) with sand overburden

180 - Open Shoreline Wetlands181 - Open Shore Wetlands182 - Rivermouth / Sheltered Wetlands

190 - Artificial191 - Artificial (apparent, known, large scale, lakefills)

999 - Unknown

List of Structural Type Codes (Based on FEPS/LOSLR Shoreline Classification)200 - Revetment

20(1) - Revetment (Class 1, well engineered, well maintained, will last over 50 year window)202 - Revetment (Class 2, moderately engineered)203 - Revetment (Class 3, poorly constructed, poorly maintained)

210 - Seawall / Bulkhead211…212…213...

220 - Groins*230 - Jetties*240 - Offshore / Marina Breakwaters*250 - Artificial / Constructed / Perched Beaches260 - Beach Nourishment270 - Vegetation Planting / Bioengineering280 - Slope Grading / Bluff Stabilization290 - Protected Wetlands300 - Ad Hoc Concrete Rubble / Rip Rap310 - Ad Hoc Other Materials320 – Boat Docks Private*330 – Boat Docks Marina*340 – Commercial / Industrial Docks/Piers/Wharves*350 – Boat Launch Ramp Docks (Public or Private)*360 – Boat Launch Ramps400 - No Shore Protection999 - Unknown

Notes:Last digit of the three digit number is the quality quantifier.

*Denotes shore perpendicular protection

Office for Coastal Management

Statistical Summary DevelopmentStill in ProgressDraft Lake Ontario Classification Statistics Summary

Unhardened Shoreline (m) Hardened Shoreline (m) Total Shoreline Mapped (m)

668,418 335,620 1,004,038

*Tetra Tech has provided this draft statistical summary as an example only. The numbers contained within the example summary are not representative of final calculations.

Office for Coastal Management

Statistical Summary DevelopmentStill in ProgressDraft Lake Ontario Unhardened Shoreline Type Distribution

*Tetra Tech has provided this draft statistical summary as an example only. The numbers contained within the example summary are not representative of final calculations.

Office for Coastal Management

Statistical Summary DevelopmentStill in ProgressDraft Lake Ontario Primary Structural Type Distribution

*Tetra Tech has provided this draft statistical summary as an example only. The numbers contained within the example summary are not representative of final calculations.

Office for Coastal Management

Questions

Brandon Krumwiede, CGP-R, GISPGreat Lakes Geospatial CoordinatorCSS Inc on contract to NOAA Office for Coastal Managementbrandon.krumwiede@noaa.gov(320) 290-1381