Aboiteaux, Dikes, and Polders ("ADP")
Creating new jobs, public procurement, and additional ecological and economic opportunities across the world
Aboiteaux are saltmarsh dike-valve drain systems that were developed by Huguenots first in The Netherlands, and then France (La Rochelle). These techniques came to Canada (Grand-Pré) and the USA (Louisiana) with the settlers whose descendants became the Acadian people. The systems were used to de-salt seaside fields.
There may be a way to re-use the 350-year-old methods to retain upland precipitation runoff. The concept is to "flip" the technique.
This is much like terracing but does not use walls. Instead, sinuous low dikes shaped to the landscape's natural contours; at a variety of scales, from metres down to 10's of centimeters; using natural materials such as softwood, saplings, and wicker as "weaveware" baffles placed in the heart of the sinuosities.
http://www.cbc.ca/news/canada/new-brunswick/the-aboiteau-may-be-the-oldest-artifact-from-the-early-french-colony-at-grand-pre-1.4362384 [CBC News story describing the discovery of an ancient "Aboiteau" drainage valve at the Grand Pré UNESCO World Heritage Site].
Hatvany, Matthew G., The Origins of the Acadian Aboiteau: An Environmental-Historical Geography of the Northeast, Historical Geography, Volume 30 (2002): 121-37 https://ejournals.unm.edu/index.php/historicalgeography/article/download/2983/2462 cf. Matthew G. Hatvany: Assistant Professor, Geography, Université Laval: Sainte-Foy, QC https://2ulaval.academia.edu/MatthewHatvany
Photo: "Cowichan Water" - Wildflower beside Water
© David Huer. It was a quiet, calm day, walking from rock to rock. Please credit if using the image. Thanks!