Beavers, River Engineers

In Oregon's Bridge Creek, beavers given simple dam starters raised juvenile steelhead survival 52% and production 175% (NOAA Fisheries).

Image: NASA (PIA26448, Klamath River, Oregon and California).

Last reviewed: 1 source cited

Explain Like I'm 10

The Five W's of Beavers, River Engineers

Who

Beavers, helped by NOAA Fisheries scientists and partners who installed beaver dam analogs.

Source: NOAA Fisheries, Oregon beavers engineer better fish habitat

What

Beaver dam analogs: simple structures beavers build on, raising water and reconnecting streams to floodplains.

Source: NOAA Fisheries, Oregon beavers engineer better fish habitat

When

Results came within a few years; scientists tracked 35,867 tagged fish over seven years.

Source: NOAA Fisheries, Oregon beavers engineer better fish habitat

Where

Bridge Creek in Central Oregon.

Source: NOAA Fisheries, Oregon beavers engineer better fish habitat

Why

Eroded, trenched streams had stranded plants and harmed steelhead; beaver dams bring water back.

Source: NOAA Fisheries, Oregon beavers engineer better fish habitat

Impact Statement

Natural solution

Beaver dams anchored to the analogs raised water levels and created pools, and water spread onto the floodplain, regrowing streamside plants and side channels. Juvenile steelhead survival jumped 52% compared with a control watershed, and four years in, juvenile steelhead production was up 175%.

Source: NOAA Fisheries, Oregon beavers engineer better fish habitat

For Further Information: NOAA Fisheries, Oregon beavers engineer better fish habitat

How This Saves People & the Planet

For People

Steelhead were once abundant across the Northwest before beavers were trapped out; restored streams that produce nearly twice as many young fish support the fisheries people rely on.

Source: NOAA Fisheries, Oregon beavers engineer better fish habitat

For Nature

Beaver ponds created more wetland, cooled the water slightly and grew back streamside vegetation, rebuilding a whole river .

Source: NOAA Fisheries, Oregon beavers engineer better fish habitat

Next: Explore Another Solution

For Teachers

Discussion questions

  1. What is Beavers, River Engineers, and what problem does it help solve?
  2. Who is behind Beavers, River Engineers, and where does the work happen?
  3. How does Beavers, River Engineers help both people and nature? Use one fact from this page.

Sources are listed with each fact in the Five W's above.

All teacher sheets

Cite This Page

APA

Saving Planets. (n.d.). Beavers, River Engineers. https://www.savingplanets.com/Beavers_River_Engineers.html

MLA

"Beavers, River Engineers." Saving Planets, https://www.savingplanets.com/Beavers_River_Engineers.html.

Share this page