The Roman Empire was one of the first cultures to perform large-scale water engineering.

130 stream restoration companies were operating in Washington. Their primary job: clearing logs from rivers.

On the brink of World War II, large dam construction accelerated.

"Detroit riprap" was used up until the late 20th century to stabilize river banks.

Growing concern about environmental degradation led to extensive federal legislation in the 1970s, including the National Environmental Policy Act (1970); Clean Water Act (1972); Endangered Species Act (1973); U.S. Environmental Protection Agency (1975).

Four fly-fishing scientists created Inter-Fluve to restore rivers to the blue ribbon fisheries they once were.

Large cities began integrating the natural environment with urban design in ways the Romans never dreamed of.

Nationwide, 1300 dams have been removed from 1912 through 2015. We’ve been involved in over 100 of them.

Throughout the Northeast, we’re restoring ecological processes to wetlands including degraded cranberry bogs.

In California, we’re working with wineries bordering Dry Creek and the Sonoma County Water Agency to provide critical habitat for young coho salmon and steelhead trout.