scholarly journals Application of the tracer radon-222 to identify groundwater discharge hotspots along the Lake Simcoe shoreline

2017 ◽  
Author(s):  
C Robinson ◽  
H Wallace ◽  
T Ji
Keyword(s):  
Groundwater Discharge ◽  
Lake Simcoe

EVALUATION OF THE GROUNDWATER DISCHARGE FROM THE YARRAGADEE FORMATION INTO THE BLACKWOOD RIVER, BLACKWOOD PLATEAU, WESTERN AUSTRALIA USING WATER BALANCE ANALYSIS

2008 ◽  
Vol 6 (2) ◽  
Author(s):  
Baina Afkril
Keyword(s):  
Water Balance ◽  
Western Australia ◽  
Groundwater Discharge ◽  
Balance Analysis

<p>Area studi terletak di bagian tenggara Dataran Tinggi Blackwood, Australia Barat mencakup 71 km<sup>2</sup>. Akifer Yarragadee di daerah studi utamanya tersusun oleh batu pasir yang mengandung lapisan-lapisan batu lempung dan liat. Akifer ini merupakan akifer tak-tertekan karena muncul dipermukaan sepanjang alur Sungai Blackwood pada daerah hilir di Nannup dan merupakan sumber airtanah yang keluar ke sungai. Sungai Blackwood mengalir melintasi Dataran Tinggi Blackwood. Selama musim kering, aliran permukaan ke dalam Sungai Blackwood dapat diabaikan, namun aliran dasar dari airtanah menjadi sumber utama bagi aliran sungai. Neraca air pada daerah studi dilakukan dengan menggunakan analisa jaring-aliran dan kesetimbangan air guna mengevaluasi masukan airtanah dari akifer Yarragadee ke dalam Sungai Blackwood. Mayoritas sel-sel jaring-aliran adalah sel-sel keluaran dan kebanyakan aliran airtanah masuk ke dalam Sungai Blackwood di daerah studi. Curah hujan rata-rata tahunan area studi sekitar 6.7 x 10<sup>7</sup> m<sup>3</sup> a<sup>-1</sup>. Sekitar 9 % dari total curah hujan rata-rata tahunan ini masuk ke dalam tanah sebagai sumber bagi air tanah dan 91 % hilang melalui proses evapotranspirasi. Volume total airtanah yang masuk ke dalam Sungai Blackwood antara stasiun Darradup dan Layman Flat yang dihitung menggunakan analisis jarring-aliran dan kesetimbangan air sekitar 8.1 GL a<sup>-1</sup>.  </p>

A Stationary Packer System for Layerwise Groundwater Sampling in Monitoring Wells – Technique and Results

1991 ◽  
Vol 23 (1-3) ◽  
pp. 545-553
Author(s):  
M. Rödelsperger ◽  
U. Rohmann ◽  
F. Frimmel
Keyword(s):  
Groundwater Discharge ◽  
Groundwater Table ◽  
Experimental Results ◽  
Concentration Profiles ◽  
Sampling Device ◽  
Local Conditions ◽  
Monitoring Wells ◽  
Deep Aquifers ◽  
Groundwater Sampling ◽  
Groundwater Samples

A sampling device was designed as a stationary equipment for deep monitoring wells in order to obtain representative groundwater samples from different layers of the aquifer. The device consists of several packer units which can be combined at variable distances, allowing adaption to the local conditions of the aquifer and of the well. The pumps are situated below the groundwater table. Each of the drawing tubes ends between two packers at the concerning depth. Experimental results demonstrate the importance of the application of a stationary packer system instead of a mobile doublepacker in deep aquifers of inhomogeneous structure. Examples of concentration profiles obtained from layerwise groundwater sampling are given and a technique for selective groundwater discharge is described.

Phosphorus Offset Program Development in Lake Simcoe Watershed to Accommodate York Region’s Growth Directive

2016 ◽  
Vol 2016 (10) ◽  
pp. 569-579
Author(s):  
Heather M Brewer ◽  
George Godin ◽  
Brian Wolf ◽  
Susan Liver
Keyword(s):  
Program Development ◽  
Lake Simcoe
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