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LNWB Ch09 Artificial Drainage


Authors: Christina Bandaragoda David Tarboton Joanne Greenberg
Owners:
Resource type: Collection Resource
Storage: The size of this resource is 2.0 KB
Created: Aug 08, 2016 at 5:19 a.m.
Last updated: Oct 05, 2016 at 2:53 p.m.
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Sharing Status: Public
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Abstract

Overview:
Artificial drainage is used throughout WRIA 1 to aid in the flow of water on top of or through the soil, sometimes to slow it down, other times to direct it to a specific location at any given depth of the landscape. Some of these systems are critical to the farm operations that make Whatcom County one of Washington’s top agricultural producers, others help riverside and lowland communities alleviate the impacts of high flowing rivers and streams. In high precipitation events, increased numbers of flow pathways provided by artificial drains may increase the peak stormwater quantities and contribute to flood impacts. Some artificial drains may even offer opportunities to improve low instream flows in the late season.

Purpose:
The model feature that represents artificial drainage has been incorporated into WRIA 1 Topnet Water Management (Topnet-WM) because of the assumption that agricultural drainage installed during development of agriculture in WRIA 1 has altered the runoff processes to a large enough degree that these alterations should be part of the simulation. Calculating how the ditches and tiles influence the drainage of the soils was done based on a drainage coefficient from NRCS technical guides. The Lower Nooksack Water Budget project team used previously existing (2007 Topnet-WM model) compiled information, data and maps of the many ditches and tile drains that exist in the Lower Nooksack study area in order to develop the artificial drainage inputs for the 2012 work conducted on the Lower Nooksack Water Budget.

This resource is a subset of the Lower Nooksack Water Budget (LNWB) Collection Resource.

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Resource Level Coverage

Spatial

Coordinate System/Geographic Projection:
WGS84 EPSG:4326
Coordinate Units:
[u'Decimal degrees']
North Latitude
49.0014°
East Longitude
-121.8967°
South Latitude
48.6475°
West Longitude
-122.6315°
This resource belongs to the following collections:
Title Owners Sharing Status My Permission
Lower Nooksack Water Budget (LNWB) Christina Bandaragoda · Jimmy Phuong  Public &  Shareable Open Access
Lower Nooksack Water Budget (LNWB) Bert Rubash  Private &  Shareable None

Credits

Funding Agencies

This resource was created using funding from the following sources:
Agency Name Award Title Award Number
WRIA 1 Joint Board Lower Nooksack Water Budget Whatcom County Contract 201111021

Contributors

People or organizations that contributed technically, materially, financially, or provided general support for the creation of the resource's content but are not considered authors.

Name Organization Address Phone Author Identifiers
Mary Dumas Dumas & Associates
Peter Gill Whatcom County Public Works
Jeremy Freimund Lummi Nation
John Gillies USDA, Natural Resources Conservation Service
Dean Renner USDA, Natural Resources Conservation Service

How to Cite

Bandaragoda, C., D. Tarboton, J. Greenberg (2016). LNWB Ch09 Artificial Drainage, HydroShare, http://www.hydroshare.org/resource/286e23da15f146c18adf2400f17e4a4c

This resource is shared under the Creative Commons Attribution CC BY.

 http://creativecommons.org/licenses/by/4.0/
CC-BY

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