Assessment of Clallam County
Shoreline Features
Michael Anderson1
Chaeli Judd1
Cathy Lear2
ABSTRACT
STUDY AREA
The vast expanse of coastline within Clallam County, Washington, contains a diverse array of shoreline
features that are ecologically important to the functioning of the adjacent marine ecosystem. Shoreline feature
documentation is valuable to resource managers for assessing the current state of the environment,
prioritizing potential sites for conservation, restoration or monitoring, and for establishing baseline conditions
used for determining changes to the shoreline over time.
A pilot project for the Clallam County Marine Resources Committee (MRC) was conducted to inventory 44
miles of shoreline from the west end of Freshwater Bay to the lighthouse at the east end of the Dungeness
spit by employing a video mapping system by Red Hen Systems, Inc. A boat-based survey collected
georeferenced video of shoreline features along transects that were mapped in ArcGIS using the GeoVideo
software extension. This innovative nearshore assessment tool improves the value of mapped information by
displaying features of interest, and allowing a user to examine recorded video anywhere along a transect or at
discrete points. The information can be used to evaluate nearshore features in Clallam County for Shoreline
Master Program updates, and will help planners, resource managers, and other entities that want to preserve
the health of Puget Sound shorelines.
INTRODUCTION
This project focused on the development and
use of a video mapping system for the rapid
collection and documentation of shoreline
feature information in a spatially explicit
manner that could then be incorporated into
a Geographic Information System (GIS) for
further analysis. Briefly, the Red Hen System
consists of a video camera coupled to a GPS
encoder/decoder hardware device that allows
the collection of video information from a
moving vessel travelling along the shoreline,
the classification of features of interest, and
the ultimate display and analysis of the
information in a GIS system.
OBJECTIVES
oMap ecologically relevant aspects of
Clallam County not easily identified in
aerial photographs
• Bluffs
• Large Woody Debris
• Shoreline Armoring
RESULTS & CONCLUSIONS
METHODS
FIELD
Example of feature mapping using the GeoVideo
extension in ArcMap. The dotted yellow line represents
the boat track and associated video collected in the
field. The displayed image represents the picture
captured from the boat at that point along the dotted
yellow line. After the video was reviewed the green line
was added to show the distribution of large woody
debris.
The Geographic Distribution of……
System Components
•Video Mapping System (VMS 300 unit)
with feature trigger.
On July 22, 2008 a boat-based survey aboard
the R/V Strait Science was performed
capturing a total of 6 hours and 8 min of
video-footage. The video footage was used to
create two products: (a) original shoreline
video, clipped into segments for each
shorezone unit in the study area, and (b)
mapped areas and underlying GIS datasets
for bluffs, shoreline armoring and large
woody debris.
Bluffs
• Canon Digital Video Camcorder
• Standard Tripod
oSupply valuable shoreline information for:
• Curent nearshore conditions
• Diversity of shoreline features
Procedure
•Ran boat approximately 100 yds. parallel to
shore at an average speed of 5.3 kts.
•Shot video in a 16:9 aspect ratio
•Used feature trigger to record features of
interest to the video tape.
LAB
•Provide data for Clallam County Shoreline
Master Program
Shoreline Armoring
Procedure
• Converted tapes to digital DVD format
using video converter and software (Ulead
Video Studio)
• Used Red Hen GeoVideo extension in
ArcMap to upload DVD file (add Media
Wizard. This produces a shapefile of
transect and associated video)
• Reviewed shapefiles and documented
distribution of shoreline features.
This data will help to
identify areas that need
special attention, protection
and/or restoration, and
provide a baseline for future
monitoring efforts. This
detailed shoreline inventory
may also offer clues to
terrestrial processes that
affect a specific area of the
nearrshore. Ultimately, the
results of the inventory will
help to further understand
our shorelines and the issues
that confront today’s
decision makers.
Large Woody Debris
www.clallammrc.org/CCMRC/
1Pacific
Northwest National Laboratory
[email protected]
[email protected]
2Clallam
County
[email protected]
Biographical Info
•
About the author: Mr. Michael Anderson is a research scientist with the Coastal Assessment and Restoration
group at the Battelle Marine Sciences Laboratory in Sequim, Washington. His background in fisheries and marine
resource management stems from his education at Oregon State University and fellowship and volunteer positions
that he has held with the Environmental Protection Agency (EPA), the Pacific Northwest National Laboratory
(PNNL), and the Oregon Department of Fish and Wildlife (ODFW). These opportunities have allowed him to
participate in applied research in estuaries of the Pacific Northwest. His areas of expertise include ecological field
surveys/evaluations, technical writing, acoustic imagery and video post-processing, development of ecological
conceptual models, and designing adaptive management plans.
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Assessment of Clallam County Shoreline Features Using a Red Hen