Impacts Of Tile Drainage

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Impacts Of Tile Drainage On Water Quality

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Author :
language : en
Publisher:
Release Date : 1994

Impacts Of Tile Drainage On Water Quality written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with categories.

This report describes the processes involved in movement of contaminants through the soil or over the surface and into tiles or ditches draining agricultural fields, incorporates an understanding of these processes into a physically-based model, collects field data for calibration and verification, uses the model to evaluate the effects of tile drainage on water quality, and provides guidance on potential management strategies. Algorithms to represent processes for chemical transport through the soil profile and into the tile drains were developed and incorporated into TILE, a continuous, physically-based hydrologic simulation model for tile-drained agricultural fields and basins. Data for model testing and calibration came from a cooperative field program on a tile-drained corn field and from field studies undertaken to define the physical parameters required by the model, including saturated hydraulic conductivity, soil type and depth, drainable porosity, and infiltration characteristics. Testing of the water quality algorithms for the pesticide employed (metolachlor) was undertaken and scenarios involving the application of pesticides and fertilizers and the timing of rainfall were evaluated to determine the potential effects on nutrient or pesticide loss from the fields through the tile drains or from surface runoff.

Impacts Of Tile Drainage On Water Quality Report

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Author : J. D. Paine
language : en
Publisher:
Release Date : 1994

Impacts Of Tile Drainage On Water Quality Report written by J. D. Paine and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Channels (Hydraulic engineering) categories.

Impacts Of Tile Drainage

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Author : J. D. Paine
language : en
Publisher:
Release Date : 1989

Impacts Of Tile Drainage written by J. D. Paine and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Drainage categories.

Investigation of the hydrology of the agricultural drainage program, and its impacts on the land phase of the hydrologic cycle. Work included the development of an annotated bibliography following an extensive literature review; the performance of statistical tests on flow data to identify trends in the data which could be attributed to the drainage process; and the impacts of both field level tile drainage and small basin ditch drainage through the use of a physically-based hydrologic model capable of simulating the drainage process continuously through the frost free period. Required input includes field and tile geometry (field length and slope, number and spacing of drain tiles, depth of tile), soil characteristics (depression storage capacity, depth of ploughed layer and depth to impervious layer), groundwater parameters (saturated hydraulic conductivity and drainable porosity), and meterological data (hourly rainfall and mean daily temperature). Output includes soil moisture storage, groundwater table height, subsurface hydrograph, and contribution to surface runoff. The model was tested on two fields in southwestern Ontario.

Impacts Of Tile Drainage

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Author : Ontario. Environmental Research Program
language : en
Publisher:
Release Date : 1989

Impacts Of Tile Drainage written by Ontario. Environmental Research Program and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with categories.

Impacts Of Tile Drainage R A C Project No 152pl

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Author : ONTARIO. MINISTRY OF THE ENVIRONMENT.
language : en
Publisher:
Release Date : 1989

Impacts Of Tile Drainage R A C Project No 152pl written by ONTARIO. MINISTRY OF THE ENVIRONMENT. and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with categories.

Hydrologic Impacts Of Tile Drainage In Iowa

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Author : Brandon Patrick Sloan
language : en
Publisher:
Release Date : 2013

Hydrologic Impacts Of Tile Drainage In Iowa written by Brandon Patrick Sloan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Clear Creek Watershed (Iowa County and Johnson County, Iowa) categories.

Agricultural tile drainage is an integral part of Iowa's landscape, with nearly 30% of Iowa's cropland being drained (Schilling & Helmers, 2008). Tile drainage allows for efficient crop production in Iowa's nutrient rich soils by removing excess water from frequently inundated fields through subsurface pipe networks. These tile systems are suspected of altering the hydrologic regime of Iowa, but the extent of the problem remains unknown. A literature review is performed to assess the current understanding of tile drainage and to help create a framework of analysis to address this problem. The deterministic field-scale model DRAINMOD is used in both a field and catchment scale analysis of the hydrologic impacts of tile drainage in conditions typical to Iowa. The field-scale study explores the influence of soil type, surface storage, rainfall characteristics, and drainage spacing on how tiling impacts the hydrologic response. A range of metrics, including the mean annual peak flow, flow duration curves, and the Richard Baker Flashiness Index are used for the analysis.

Farm Drainage

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Author : Henry Flagg French
language : en
Publisher:
Release Date : 1859

Farm Drainage written by Henry Flagg French and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1859 with Drainage categories.

Tile Drainage Or Why Where When And How To Drain Land With Tiles

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Author : W. I. Chamberlain
language : en
Publisher:
Release Date : 1914

Tile Drainage Or Why Where When And How To Drain Land With Tiles written by W. I. Chamberlain and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1914 with Drainage categories.

The Economic Impact Of Tile Drainage On Northern New York Dairy Farms With Optimal Combinations Of Enterprises

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Author : Frederick W. Wackernagel
language : en
Publisher:
Release Date : 1979

The Economic Impact Of Tile Drainage On Northern New York Dairy Farms With Optimal Combinations Of Enterprises written by Frederick W. Wackernagel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with Dairying categories.

Tile Drainage

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Author : James A. King
language : en
Publisher:
Release Date : 1918

Tile Drainage written by James A. King and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1918 with Drain-tiles categories.