Before our November sunny break I headed north to Lynden and noted the water logged Nooksack River flood plain south of town.
Nooksack River flood plain south of river and south of Lynden
The river was not flooding. The source of water standing over acres of land was the result of lots of local rain and poor drainage. The silty soils, high ground water and subtle topography cause water to accumulate in the fields.
The DEM of the area shows the problem of drainage on the flood plain - it is essentially uphill to the river.
DEM of Nooksack flood plain
Without the ability to keep the narrow ditches and stream connections to the river these fields would turn into swamp land or wet lands depending on your word selection. Water on the fields is not a problem in the winter, but if the fields remain wet deep into late spring, the farm land will be of little value.
The Growth Management Act requires counties to protect wetlands; however, there is a recognition that agricultural land should be protected as well. Under the local GMA required regulations Whatcom County critical areas regulations for wetlands allow the maintenance of drainage channels on farm lands. But the work on these drainage channels still requires State permits from the Washington State Department of Wildlife and the work requires a farm conservation plan.