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Big Muddy Clean Sweep · Missouri River Relief

Big Muddy Clean Sweep · 2026 results

49 days. One river. A lot less trash.

From Kansas City to Columbia, crew and volunteers followed the Missouri downstream, removing what the river had carried, caught and left behind.

21.23
tons removed
0bags of trash
0tires
0refrigerators
0mini bottles
0.0mineral tubs
055-gallon drums
The full haul
42,465pounds removed

That is 21.23 tons of trash, tires and scrap metal taken out of the Missouri River corridor.

What made up the weight?

Select a section to see how the final weight was assembled.

27,415 lb

Loose trash and debris. Bagged trash and bulky debris recorded in ten dumpster and dump-trailer loads. Two haul weights are documented estimates.

Every pound was lifted, loaded and hauled by people.
1,043bags
285tires
6,339mini bottles
16refrigerators

Final weight combines scale receipts with documented estimates. Object counts come from the final master tally.

Explore the river

Results, place by place

Select a point on the route to see what the crew removed there. This first wireframe shows bags and tires from the final master tally.

Illustrated Missouri River cleanup route across Missouri
Ring size shows tons
Put it in perspective

How big was the cleanup?

Weight, volume and distance turn the final tally into something easier to picture.

Choose a comparison to see the cleanup at scale

8,493Great Blue HeronsAt about five pounds each, it would take 8,493 Great Blue Herons to match the weight removed. Each of the 196 birds in the final grid represents about 43 herons.

Illustrative comparisons use the final tally plus the stated reference assumptions. Actual bag fill and bird weights vary.

The human haul

Every piece came out by hand.

One piece at a time

Picked from the riverbank.

Bottles were plucked from drift piles. Tires were wrestled out of the mud. Every bag began with someone bending down.

No machinery

Carried, loaded and hauled.

Volunteers and crew moved the entire cleanup over sand, roots and steep banks using their own hands and backs.

The things that surprised us

You find what the river keeps.

The tally included the everyday, the enormous and the things nobody expected to see on a riverbank.

01

A beached wave runner

It took a crew and plenty of persistence to haul away the Sea-Doo stranded on Baltimore Island.

A damaged WaveRunner on the sand beside the Missouri River cleanup camp

Also pulled from the river

Fiberglass boatFitness trampolineGarage door sectionMetal buoyThree shopping cartsSix car bumpers
The bottle audit

Every bottle counted by hand.

The crew chose mini liquor bottles as a focus from the beginning because they are small, common and almost always single-use.

6,339 mini bottles

Each bottle was picked from the riverbank, sorted and counted. The audit turns thousands of tiny pieces of plastic into a record of what keeps reaching the Missouri.

Laid end to end, they would stretch about 2,245 feet, more than three and a half times the height of the Gateway Arch.

Length uses an estimated 4.25-inch bottle. Bottle dimensions vary by brand.

What the crew found

The five largest categories in a 98-type hand count.

Fireball1,312
New Amsterdam978
Unidentifiable684
American Honey518
Smirnoff294
River Notes

The stories behind the numbers

Weather changed plans. Volunteers changed what was possible. Every shift left its own stories behind.

Shift 8 & 9 · The Last Haul

“My bucket is indeed overflowing.”

Alyssa Thomas looks back on the final days, the human power behind 21 tons and the crew that made the river its home for 49 days.

Read the final River Note
Shift 7 · When the River Calls the Shots

“We all knew that it probably wasn’t great news for our beloved camping site.”

A forecast spike sent the crew to higher ground and forced a hard change of plans.

Read Shift 7
Shift 4

A Sea-Doo, a beaver and laundry in a Folger’s can

Baltimore Island delivered the project’s most memorable machine and a week full of stories.

Read Shift 4
49 days in photographs

See the Clean Sweep

Camp life, volunteer days, trash hauls and the river between them.

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The full photo archive

Explore the BMCS Flickr albums.

198unique volunteers
973volunteer hours
164general volunteers
34MRR crew
The people who moved it

All of it came out by hand.

Across 198 river miles, volunteers and crew from river communities, partner groups and Stream Teams picked, carried, loaded and unloaded every bag, tire, refrigerator and oddball find.

The final activity report counts repeat volunteers once. Its crew total includes people who worked shifts or brought food to the crew.

Behind the work

Meet the Core Crew

The Big Muddy Clean Sweep ran on a small crew with decades of river experience, diverse backgrounds and a wide range of skills.

Swipe or scroll to meet all six
Kevin Tosie
Meet Kevin Tosie

Kevin Tosie

After volunteering with Missouri River Relief in college, Kevin joined the staff in 2018. His passion remains removing literal tons of trash from the Missouri River.

Alyssa Marie Thomas
Meet Alyssa Thomas

Alyssa Marie Thomas

Missouri River Relief’s Stewardship Coordinator, Alyssa brought five years with the organization and experience from a previous Big Muddy Clean Sweep.

Ryan McCoy
Meet Ryan McCoy

Ryan McCoy

A longtime teacher, paddler and safety-boat operator, Ryan worked downstream from Lawrence, Kansas, to join the Clean Sweep crew.

Melanie Knocke
Meet Melanie Knocke

Melanie Knocke

An astronomy educator, author, narrator, paddler and MRR board member, Melanie joined the crew to give back to her home state.

Matthew Mud Britt
Meet Mud Britt

Matthew “Mud” Britt

An avid paddler, expert outdoorsman, carpenter and Army infantry veteran, Mud is always ready to find the next river adventure.

Eileen Combs
Meet Eileen Combs

Eileen Combs

Eileen volunteers with MRR education programs, community cleanups and MR340 merchandise operations after a 30-year banking career.

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