Cross section schematic (above) of general beaver dam analog (BDA) without fill material. Plan view (below) showing the features of a convex primary dam. The hypothesized geomorphic and...

an adapted version of the popular cross-section hydraulic analyzer spreadsheet (xsecAnalyzerVer17.xlsm) developed by the USDA-NRCS. The design tool also includes spreadsheets to assist the user in inputting geometry of …

Beaver dam analogues (BDAs) are temporary, channel-spanning structures built by humans that mimic or reinforce natural beaver dams, and in many cases are eventually used and enhanced by beaver.

Jul 15, 2016 · Most beaver dams are built from wooden sticks, with stones at the base. The cross section is triangu-lar, with an average width-to-height ratio of 2.9, Watling (2015). The dams have a shallow upstream, and a steep downstream slope with a sealing layer made of mud and leaves on the upstream side. A gap

May 26, 2022 · Beaver dams have minimal porosity and cross sections reveal an intricate and non-random matrix of sediment, grass, logs and other debris (even traffic cones). Sediment is dredged from the pool nightly and is anchored in place atop the dam with building materials — and sometimes rocks as large as 6 inches in diameter.

The illustration below depicts how beaver dams stabilize stream flow rates. The illustration shows a horizontally compressed cross section between two streams, and how groundwater charge keeps the stream flowing.

BDAs are designed to mimic the form and function of natural beaver dams and can be used to encourage beaver to inhabit specific stream reaches in order to meet restoration goals and/or mitigate...

Download scientific diagram | Cross sectional and planform view of a generic beaver dam analog structure. In practice BDAs may include posts or be built without using posts depending on site...

Cross-sections were based on the proposed BDA structure location and spaced at 5-meter intervals with two below the BDA, one at the BDA, and four upstream of the BDA. Surveys were conducted using an auto-level, stadia rod, and measuring tape.

There are a large number of ways to construct beaver dam analogues. We are partial to those that take their inspiration most directly from beaver. In so many of the places that beaver can build dams, they do so successfully without any posts driven vertically into the streambed.