The effects of weirs on plants and wildlife in the coastal marshes of Louisiana

Document Type

Article

Publication Date

1-1-1989

Abstract

An important technique for management of tidal marsh, particularly in areas that will not support levees to form impoundments, is construction of weirs in drainage systems of the marsh. A weir reduces the rate of tidal flow and establishes a basin of water behind the structure that cannot recede below the crest; consequently, complete drainage of marshes and most ponds on low tide is prevented. With reduced tidal flow, streams carry less suspended materials, and water turbidity decreases. Hundreds of weirs have been constructed along the Louisiana coast for marsh management. Production of aquatic plants was 400% greater and more ducks were present in ponds behind weirs. -from Authors

Publication Source (Journal or Book title)

Biological Report - US Fish & Wildlife Service

First Page

142

Last Page

150

This document is currently not available here.

Share

COinS