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Status assessment of agricultural drainage ditches

Avilés, Daniel (2018). Status assessment of agricultural drainage ditches. Transactions of the Asabe. 61 , 263-271
[Research article]

[img] PDF (© 2018 American Society of Agricultural and Biological Engineers) - Published Version


Poor maintenance, environmental concerns, land use changes, and adaptation to climate change are creating a growing need for better agricultural drainage. The objectives of this study were to identify ditch properties that can be evaluated visually on-site and related soil erosion processes, and to define parameters requiring more intensive study and estimate these using simplified methods. The study included surveys of ditches in various soils using MADRAS (Minnesota Agricultural Ditch Research Assessment for Stability) to classify ditch status. To explain why some ditch segments were in poor condition, additional field and laboratory studies were carried out. Soil samples were taken for analysis of particle size distribution, unsaturated direct shear strength, and critical stress for erosion. The HEC-RAS data model was used for simulation of hydraulic forces acting at different flow rates. Digital maps of land use in the catchment area in different years were used to estimate changes in runoff conditions over time. MADRAS proved to be a suitable tool for rapid assessment of stability problems in ditches. The HEC-RAS simulations were a good complement to MADRAS in assessing how changes in land use affected the hydraulic load and in highlighting bottlenecks in the system. However, the hydraulic load did not adequately explain the degree of degradation in some ditch segments. Measurements of soil shear strength were a good aid to understanding existing degradation. Thus, assessment of soil erodibility and bank stability is essential in anticipating the risk of future erosion processes in ditches.

Authors/Creators:Avilés, Daniel
Title:Status assessment of agricultural drainage ditches
Series Name/Journal:Transactions of the Asabe
Year of publishing :2018
Page range:263-271
Number of Pages:9
Publisher:American Society of Agricultural and Biological Engineers
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Soil Science
Keywords:Cohesive strength meter, HEC-RAS, MADRAS, Unsaturated direct shear strength
Permanent URL:
Additional ID:
Type of IDID
Web of Science (WoS)000426051100022
ID Code:16774
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Soil and Environment
(S) > Dept. of Soil and Environment
Deposited By: SLUpub Connector
Deposited On:07 Jul 2020 08:10
Metadata Last Modified:07 Jul 2020 08:10

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