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TitleDescription of watershed outline and water depth survey datasets from Geraldine Lake - Iqaluit, Nunavut / Description des données de profondeur d'eau et de délimitation du bassin versant du lac Geraldine - Iqaluit, Nunavut
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorBudkewitsch, P; Prévost, C; Pavlic, G; Pregitzer, M
SourceGeological Survey of Canada, Open File 6750, 2011, 43 pages, Open Access logo Open Access
PublisherNatural Resources Canada
Documentopen file
Lang.English; French
Mediaon-line; digital
RelatedThis publication is related to Watershed mapping and monitoring for northern community impact assessment - Iqaluit, Nunavut
File formatpdf
NTS25N/09; 25N/10; 25N/15; 25N/16
AreaIqaluit; Geraldine Lake
Lat/Long WENS-69.0000 -68.0000 64.0000 63.5000
Subjectshydrogeology; geophysics; Nature and Environment; watersheds; lake water depths; lake water; groundwater; groundwater resources; groundwater surveys; groundwater regimes; groundwater levels; surface waters; remote sensing; satellite imagery; bathymetry
Illustrationslocation maps; photographs; satellite images; digital elevation models
ProgramClimate Change Geoscience
Released2011 07 08
AbstractA watershed outline map, a bathymetric map, and water related statistics of Geraldine Lake, the Iqaluit water supply reservoir where produced following field work in Iqaluit during the summer of 2008. One objective of this initiative was to develop the technology for Nunavut scientists and to transfer the methodologies in communities where drinking water supply is at risk due to a declining supply
and a changing climate. With support from Indian and Northern Affairs Canada (INAC), a small team of scientists from the Canada Centre for Remote Sensing (CCRS) are involved in a project to help characterize the water supply of Nunavut communities. This was a complex task involving the delineation of watersheds and estimation of the water volume of the supply lake for the community. To estimate this water volume, a bathymetric map was produced based on field surveys using a depth sounder equipped with a GPS.
CCRS developed a low cost and easy to use technique to enable such depth surveys to be rapidly carried out. The technology transfer aspect of the activity was aimed to allow Nunavut professionals to produce lake depth maps with low cost and easy to use tools and software. The enclosed datasets were produced under the ''Enhancing Resilience in a Changing Climate Program'' of the Earth Sciences Sector, Natural Resources Canada. Thousands of depth survey points were acquired between July 25th and August 1st 2008 by CCRS scientists, Nunavut Department of Environment staff, and a teacher of the Nunavut Arctic College.
Several large format image maps were printed and distributed to the Municipality of Iqaluit, the Department of Community and Government Services offices in all three regions of Nunavut, the Department of Indian and Northern Affairs, etc., and were presented at several venues.
This document describes the digital dataset of Geraldine Lake provided to the Planning and Lands office of the Municipality of Iqaluit.

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