Report Details

It was a foggy cool day. At mile 161 we walked the mile between the Siltcoos outlet & the signpost that closes the beach to DHVS. We saw people walking, taking photos, and fishing. We saw 8 harbor seals in the surf, 2 bald eagles, 5 plovers, 3 large flocks of sanderling, and a few gulls. Along the wrack line, we found many colors of plastics, lots of shells, and thousands of Vellela vellela. As we were leaving we witnessed a sheriff ticket 4 separate minors on dirt bikes for riding on the highway to enter the parking lot.

Conditions

Temperature: 51 F. Cloud Cover: Foggy. Wind Velocity: Calm/Light. Tide Level: 7.0 feet.

Activities

Number of people: 15. Walking or running: 2. Sitting: 12. Fishing: 1.

Other Activities: People in the parking lot were riding dirtbikes.

Concerns

Apparent violations: 4 people were ticketed in the parking lot by the sheriff for riding their OHVs on the highway in to the parking lot area..

Notable Wildlife

2 bald eagles, 3 large flocks of sanderlings, 5 western snowy plovers, a few gulls, 8 harbor seals in the surfline.

Dead Fish or Invertebrates

23 dead or molted crab shells 1 dead jellyfish Thousands of washed-up Velella Velella in the wrack line.

Wrackline Content

Small rocks, Seaweeds and seagrass, Shells, Animal casings or molts, Wood pieces, Marine debris, Plastic debri (plastic, styrofoam, etc. washing in from the sea), Ocean-based debris (from fishing boats, ship trash, etc.). Blue Plastic Green Plastic Red Plastic Orange Plastic White Plastic Clear Plastic Rope Styrofoam Shotgun Shell Metal Glass Black plastic Brown plastic Trash Left behind Yellow plastic Dead European grass Vellela vellela Seals Sticks Shells Huckleberry leaf Alder flowers Salal leaf Lichen Seaweed Crab English ivy leaf Spruce cone Fishing Lure Jellyfish Feather driftwood Fishing hook Beer can Pine cone

Natural Changes

Erosion of vegetated foredune. Smaller cut bank compared to January's observation. Multiple larger dune areas with beach grass intact has begun eroding due to wave action, some beach grass is dead and washing up in the wrack line because of this erosion.

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All Mile 161 Reports

Showing 8 of 39 reports

Mile 161

Oregon Dunes NRA just north of Siltcoos River

October 22, 2025

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

August 26, 2025

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

August 9, 2025

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

July 24, 2025

I monitor this location as a USFS Snowy Plover docent.

Anna Yori

Mile 161

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.

Siuslaw Stream Team

Mile 161

Oregon Dunes NRA just north of Siltcoos River

April 2, 2025

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

January 22, 2025

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

Mile 161

Oregon Dunes NRA just north of Siltcoos River

October 23, 2024

What we found at mile 161 is a variety of things like birds, clams, and shells.

Siuslaw Middle School Stream Team