Mile 161 Report
Oregon Dunes NRA just north of Siltcoos River
May 20, 2025
Many abiotic and biotic factors can be found along the shoreline of Siltcoos Outlet, Florence Oregon. Overall, we found many living and non living things along the wrack line of mile 161.
Report Details
Many abiotic and biotic factors can be found along the shoreline of Siltcoos Outlet, Florence Oregon. The biotic factors include mollusks, crustaceans, shells, dead or alive crabs, jellyfish, and much more. Then the abiotic factors include plastics, sand, rocks, and glass. There could be many more things we could find along the seashore as well. Overall, we found many living and non living things along the wrack line of mile 161. For living, it included velella velella, jellyfish, seaweed, driftwood, a bald eagle, barnacles, and much more. Then for non-living we saw sand, plastic, rocks, a tennis ball, a buoy, etc. There was more living than non-living things. However, there was a ton of plastic because of our human impact. There was more plastic along the higher part of the shoreline because when the tide is in, the lightweight plastic gets washed up along the high part of the shoreline.
Conditions
Temperature: 54 F. Cloud Cover: Partly Cloudy. Tide Level: 3.0 feet.
Activities
Number of people: 6. Sitting: 6.
Concerns
Litter
Vehicles
ATVs/OHVs on beach, allowed: 1.
Notable Wildlife
Sand fleas, turkey vulture, bald eagle, barnacles, sea grass, crabs, ants, flies
Wrackline Content
Pie chart of wrack line content included in images
Report Images
Siuslaw Stream Team
CoastWatcher
All Mile 161 Reports
Mile 161
Oregon Dunes NRA just north of Siltcoos River
What evidence of living or non-living things is found in the wrack line of mile 161? We went to the lowest rackline first, then, while going back, explored the top rackline. Then we explored the river’s mouth and went back to the starting point in the middle. We went the other way until we got to the big yellow sign that said 109A. We did the same thing here, we went to the lowest rack line, then the highest wrack line on the way back. In conclusion, the beach has many living things on the shoreline, and you should be careful of things there. We found lots of shells and other things to put on our posters. By Kaydence Gonzales, Olive Dougherty, Lillian Olson, Ella Gilkey, Myla Streck, Kinsey Boggs
Siuslaw Stream Team
Mile 161
Oregon Dunes NRA just north of Siltcoos River
We are the shoreline group of the first quarter 6th-grade Stream Team.
Siuslaw Stream Team
Mile 161
Oregon Dunes NRA just north of Siltcoos River
I was pleasantly surprised to spot many juvenile plovers near the water's edge and further up the shore, sitting in scrapes. I was dismayed to find long expanses of dead jellies. As always, the osprey were feeding and then watching me from their perch on an old fallen tree.
Anna Yori
Mile 161
Oregon Dunes NRA just north of Siltcoos River
I was happy to see less human encroachment this time into the protected, fenced-off areas designated for the endangered Snowy Plovers.
Anna Yori
Mile 161
Oregon Dunes NRA just north of Siltcoos River
I monitor this location as a USFS Snowy Plover docent.
Anna Yori
Mile 161
Oregon Dunes NRA just north of Siltcoos River
Many abiotic and biotic factors can be found along the shoreline of Siltcoos Outlet, Florence Oregon. Overall, we found many living and non living things along the wrack line of mile 161.
Siuslaw Stream Team
Mile 161
Oregon Dunes NRA just north of Siltcoos River
At least twenty-nine different species of marine mammals occur in Oregon coast waters. In conclusion, for all of the evidence and data we collected from walking on mile 161, we found the remains of living and dead creatures and many other human-created things.
Siuslaw Middle School Stream Team
Mile 161
Oregon Dunes NRA just north of Siltcoos River
We Are the shoreline group of the siuslaw middle school team team. We brought with us binoculars, Coastwatch data sheet, and a Bucket for trash. In the end we found lots of evidence of living things along with non living on the wrack line of mile 161.
Siuslaw Stream Team