Mile 340 Report
South Jetty Columbia River, Fort Stevens SP
September 16, 2022
There's a tree stump that is gradually being progressively exposed (see photo).
Report Details
There's a tree stump that is gradually being progressively exposed (see photo). I marked this with red paint. This should be an excellent opportunity to measure the rate of dune retreat. Wish I had thought about this a year or so ago when I first saw it. I've been monitoring it for the last months and have taking photos.Also, somthing else I will start doing and should've started years ago, that is, measuring dune profiles using an Abney level. I'll begin this next month. This is valuable data, easily acquired, and something we could ask CW'ers to do.
Conditions
Temperature: 60 F. Cloud Cover: Partly Cloudy. Wind Velocity: Calm/Light. Wind Direction: SW. Tide Level: -1.2 feet.
Human Activities
Number of people: 4. Number of dogs: 1. Walking or running: 2. Other Activities: 2 Bicycling.
Vehicles
Cars/trucks parking: 2. Cars/trucks on beach, allowed: 2.
Beached Birds
Total dead birds: 2.
Driftline Content
Seaweeds and seagrass, Shells, Wood pieces. Virtually no marine debris.
New Development
Dunes have much gentler slopes - typical summer profile.
Natural Changes
Visible retreat of solid bluff. Dunes have much gentler slopes - typical summer profile.
Looking north toward So. Columbia River Jetty - note summer dune profile.
Note red marker on log showing dune migration over last few months. Will be monitored monthly to assess rate of dune erosion.
Report Images
edjoyce
CoastWatcher
All Mile 340 Reports
Mile 340
South Jetty Columbia River, Fort Stevens SP
I set out to walk mile 340, the northernmost mile in the state of Oregon, because I was curious to document wrackline biodiversity where the Columbia River meets the Pacific Ocean at "Clatsop Spit". Opalescent squid is the most common taxa of squid distributed on the Oregon Coast.
sultanym
Mile 340
South Jetty Columbia River, Fort Stevens SP
This mile report was conducted to document notable wildlife offshore observed from the South Jetty/Parking Lot C area looking down onto mile 340 from the jetty.
sultanym
Mile 340
South Jetty Columbia River, Fort Stevens SP
Nothing important to note.
edjoyce
Mile 340
South Jetty Columbia River, Fort Stevens SP
Small amounts of marine debris were reported on NOAA's Marine Debris survey report.
edjoyce
Mile 340
South Jetty Columbia River, Fort Stevens SP
Dunes are taking on less steep slopes - see photos.
edjoyce
Mile 340
South Jetty Columbia River, Fort Stevens SP
Dead sea lion, which had been shot with a shot gun, and direct evidence of continued eastward migration of eroding dunes
edjoyce
