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Articles 4891 - 4920 of 5276

Full-Text Articles in Earth Sciences

Use Of Groundwater For Irrigation In Hamilton And York Counties, Nebraska, Eugene K. Steele Jr. Feb 1971

Use Of Groundwater For Irrigation In Hamilton And York Counties, Nebraska, Eugene K. Steele Jr.

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Don't Crop Areas Liable To Waterlogging, Department Of Agriculture, Western Australia Jan 1971

Don't Crop Areas Liable To Waterlogging, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

The increasing areas of crops being sown in high rainfall districts make it likely that many crcp areas include sections liable to severe waterlogging.

This report presents results of a 1970 trial which clearly show that sowing such sections is not economic.


Growing Plants With Salty Water, C V. Malcolm, S. T. Smith Jan 1971

Growing Plants With Salty Water, C V. Malcolm, S. T. Smith

Journal of the Department of Agriculture, Western Australia, Series 4

LACK of good quality water in many parts of Western Australia often forces people to use salty water for irrigation and gardening.

This article gives some hints on how to reduce salt damage to plants when salty water must be used for irrigation or gardening.

It includes a table of plants which may be irrigated with water of varying degrees of salinity and lists precautions which should be taken for each group.


Trickle Irrigation, B Swan Jan 1971

Trickle Irrigation, B Swan

Journal of the Department of Agriculture, Western Australia, Series 4

THE introduction of trickle irrigation has caused tremendous interest among commercial irrigators. While not a new concept, its application was formerly restricted to glasshouse and nursery use.


Sprinkler Irrigation In Windy Conditions, K S. Cole, G. C. Brown Jan 1971

Sprinkler Irrigation In Windy Conditions, K S. Cole, G. C. Brown

Journal of the Department of Agriculture, Western Australia, Series 4

THOSE summer winds—be they cooling afternoon breezes or scorching easterlies—are no help to the irrigationist.

Where sprinklers are used wind can result in uneven irrigation, reduced yields and spoilt produce.


Low Cost Filter For Trickle Irrigation, C R. Coffman, G. L. Godley Jan 1971

Low Cost Filter For Trickle Irrigation, C R. Coffman, G. L. Godley

Journal of the Department of Agriculture, Western Australia, Series 4

CLEAR water is essential for a successful trickle irrigation scheme. Most water sources are not sufficiently clean and some form of filtration is necessary.


Farm Dams In High Rainfall Areas, G C. Brown Jan 1971

Farm Dams In High Rainfall Areas, G C. Brown

Journal of the Department of Agriculture, Western Australia, Series 4

WATER storage is essential on most south-west farms to ensure adequate irrigation supplies in the dry summers. Government irrigation water supply schemes are limited and most farmers must supply their own water storage.


Land Levelling With Scrapers, K R. Southon Jan 1971

Land Levelling With Scrapers, K R. Southon

Journal of the Department of Agriculture, Western Australia, Series 4

A VARIETY of earth-moving equipment can be used in preparing land for flood irrigation, but the best machine for extensive earth moving over some distance is a power-driven, carry-all scraper.


Irrigating With Underground Water, T C. Calder Jan 1971

Irrigating With Underground Water, T C. Calder

Journal of the Department of Agriculture, Western Australia, Series 4

MANY farmers in South-West areas are looking to irrigation to increase and diversify farm production, particularly on the sandy coastal plain where irrigation in summer is essential for vegetable, fruit and fodder production.


The Generation Of Flood Damage Time Sequences, John P. Breaden Jan 1971

The Generation Of Flood Damage Time Sequences, John P. Breaden

KWRRI Research Reports

There is a need in water resources planning to develop a procedure for determining the time pattern in which flood damages occur as a function of the rise and fall of the flood hydrograph. The widely-used approach for estimation of flood damages does not take into account the fact that the frequency of the annual flood peak may not be the same as the frequency of the total annual flood damages. As examples, several small storms during the year may do more damage than a single larger storm, or flood damages may be reduced by a reduction in flood duration …


Pleistocene Aquifers In Coles County, Illinois, James D. Hopkins Jan 1971

Pleistocene Aquifers In Coles County, Illinois, James D. Hopkins

Masters Theses

No abstract provided.


Water Conservation Handbook, D J. Carder, G. W. Spencer Jan 1971

Water Conservation Handbook, D J. Carder, G. W. Spencer

Natural resources published reports

This handbook is intended as a practical guide in some of the most common aspects of water conservation in the agricultural areas of Western Australia. It deals mainly with water conserved in dams for stock and domestic purposes on the farm.

the farm. The handbook does not attempt to deal with all aspects of handling and using water for agricultural purposes. This is a vast subject which extends into many fields such as engineering, irrigation and land use.

The guide does, however, touch on some important aspects of good management of agricultural land. It should be read in conjunction with …


Clay Cover For Roaded Catchments, J L. Frith, R. A. Nulsen Jan 1971

Clay Cover For Roaded Catchments, J L. Frith, R. A. Nulsen

Journal of the Department of Agriculture, Western Australia, Series 4

RECENT dry years have stimulated interest in improved catchments for farm dams. Although roaded catchments have been installed on many farm dams in Western Australia, most of them fall short of their potential for increasing run-off.


Irrigation In South-Western Australia, K S. Cole Jan 1971

Irrigation In South-Western Australia, K S. Cole

Journal of the Department of Agriculture, Western Australia, Series 4

THE pattern of irrigation in South-Western Australia is constantly changing, At present, the main increase is in the private sector.

In the past century, there has been a see-saw effect from private to Government to private schemes.


Simple Evaporimeter For Timing Trickle Irrigation, C R. Coffman Jan 1971

Simple Evaporimeter For Timing Trickle Irrigation, C R. Coffman

Journal of the Department of Agriculture, Western Australia, Series 4

DIFFERENCES in soil types and size of trees in orchards make it impossible to give a single recommendation for trickle irrigation running time.

Daily running time for each situation can be simply and fairly accurately calculated from weekly readings of an easily constructed evaporimeter.


Directory Of Nebraska Quarries, Pits, And Mines, R. R. Burchett Jan 1971

Directory Of Nebraska Quarries, Pits, And Mines, R. R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Dunes On The Plains, The Sand Hills Region Of Nebraska, C. F. Keech, R. Bentall Jan 1971

Dunes On The Plains, The Sand Hills Region Of Nebraska, C. F. Keech, R. Bentall

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Shaded Topographic Map Of Nebraska Jan 1971

Shaded Topographic Map Of Nebraska

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Nebraska Minimum Standards For Artificially Gravel Packed Irrigation Wells, P. E. Fischbach, P. E. Schleusener, V. H. Dreeszen Jan 1971

Nebraska Minimum Standards For Artificially Gravel Packed Irrigation Wells, P. E. Fischbach, P. E. Schleusener, V. H. Dreeszen

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Nebraska Groundwater Level (Decline & Rise), 1971 Jan 1971

Nebraska Groundwater Level (Decline & Rise), 1971

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Shaded Topographic Map Of Nebraska, Conservation And Survey Division Jan 1971

Shaded Topographic Map Of Nebraska, Conservation And Survey Division

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Effect Of The Pedernal Axis On Permian And Triassic Sedimentation, Philip F. Hock Aug 1970

Effect Of The Pedernal Axis On Permian And Triassic Sedimentation, Philip F. Hock

Earth and Planetary Sciences ETDs

The area surrounding the Pedernal Hills has been of scientific and economic interest for a number of years. The effect of the Pedernal axis on sedimentation and stratigraphy of late Paleozoic rocks is of major importance. The principal purposes of this study were to determine whether the Precambrian terrane was an active source of sediment and what effect it had on thickness of strata during Permian and Triassic time. the area was also mapped in as much detail as the scale (1:125,000) permitted.


A Preliminary Survey Of The Damariscotta River Estuary, Lincoln County, Maine, Maine Department Of Economic Development Jun 1970

A Preliminary Survey Of The Damariscotta River Estuary, Lincoln County, Maine, Maine Department Of Economic Development

Maine Collection

A Preliminary Survey of the Damariscotta River Estuary, Lincoln County, Maine

Part I - Hydrology; Part II - Sediments

"Prepared Under a Grant From the Maine Marine Stipend Program".

Maine Department of Economic Development - Division of Science, Technology & Mineral Resources, Augusta, Maine (July 1969 - June 1970).



Groundwater Levels In Nebraska, 1969, C.F. Keech May 1970

Groundwater Levels In Nebraska, 1969, C.F. Keech

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Re-Exploring The Missouri, Thompson Mylan Stout May 1970

Re-Exploring The Missouri, Thompson Mylan Stout

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Guidebook To The Geology Along The Missouri River Bluffs Of Southeastern Nebraska And Adjacent Areas, R. R. Burchett Apr 1970

Guidebook To The Geology Along The Missouri River Bluffs Of Southeastern Nebraska And Adjacent Areas, R. R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Use Of Groundwater For Irrigation: Seward County, Nebraska, J.M. Jess Mar 1970

Use Of Groundwater For Irrigation: Seward County, Nebraska, J.M. Jess

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Use Of Groundwater For Irrigation: Seward County, Nebraska, J.M. Jess Mar 1970

Use Of Groundwater For Irrigation: Seward County, Nebraska, J.M. Jess

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Groundwater Regions In Nebraska Jan 1970

Groundwater Regions In Nebraska

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.


Opset Program For Computerized Selection Of Watershed Parameter Values For The Stanford Watershed Model, Earnest Yuan-Shang Liou, L. Douglas James Jan 1970

Opset Program For Computerized Selection Of Watershed Parameter Values For The Stanford Watershed Model, Earnest Yuan-Shang Liou, L. Douglas James

KWRRI Research Reports

The advent of high-speed electronic computer made it possible to model complex hydrologic processes by mathematical expressions and thereby simulate streamflows from climatological data. The most widely used program is the Stanford Watershed Model, a digital parametric model of the land phase of the hydrologic cycle based on moisture accounting processes. It can be used to simulate annual or longer flow sequences at hourly time intervals. Due to its capability of simulating historical streamflows from recorded climatological data, it has a great potential in the planning and design of water resources systems. However, widespread use of the Stanford Watershed Model …