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REP 91

Regional Geological and Hydrogeological Characterization of the Calgary-Lethbridge Corridor in the South Saskatchewan Regional Planning Area

In partnership with Alberta Environment and Parks (AEP), the Alberta Energy Regulator/Alberta Geological Survey (AER/AGS) undertook a study in the Calgary-Lethbridge Corridor (CLC) area of southern Alberta to support the development and ... Show Abstract

Atkinson, L.A.  Liggett, J.E.  Hartman, G.M.D.  Nakevska, N.  Mei, S.  MacCormack, K.E.  Palombi, D.  2017-02-24

Model 2018-01

Numerical Groundwater Flow Model of the Sylvan Lake Sub-Basin in the Edmonton-Calgary Corridor, Central Alberta (multiple files, text format)

Numerical Groundwater Flow Model of the Sylvan Lake Sub-Basin in the Edmonton-Calgary Corridor, Central Alberta (multiple files, text format) The model dataset is the collection of text files required by the United States Geological Survey (USGS) ... Show Abstract

Liggett, J.E.  Singh, A.  2018-11-26

REP 96

Numerical Groundwater Flow Model of the Sylvan Lake Sub-Basin in the Edmonton-Calgary Corridor, Central Alberta

A numerical groundwater flow model was developed in the United States Geological Survey’s MODFLOW groundwater modelling software to improve the understanding of regional groundwater movement and availability, and to examine the effects of stresses ... Show Abstract

Liggett, J.E.  Singh, A.  2018-11-26

DIG 2018-0011

Groundwater Yield Continuum for Southern Alberta (GIS data, polygon features)

Groundwater Yield Continuum for Southern Alberta (GIS data, polygon features) The yield continuum classifies groundwater yield along a spectrum that helps define total groundwater availability. The classes within the groundwater yield continuum ... Show Abstract

Klassen, J.  Liggett, J.E.  2018-10-23

SPE 110

Calgary-Lethbridge Corridor Geophysical Survey: Interpretation of AeroTEM Airborne Data

The purpose of the survey was to map aquifers with electromagnetic imaging techniques. The data were processed by Aeroquest using a conductivity depth imaging (CDI) method called differential resistivity. The traverse and tie line Hz data were ... Show Abstract

Davis, L.  Groom, R.W.  2018-09-17

OFR 2018-09

First-Order Groundwater Availability Assessment for Southern Alberta

Abstract: The Alberta Geological Survey (AGS) has used an aquifer yield continuum approach to quantify groundwater yield to a depth of 150 m below ground surface in southern Alberta. The aquifer yield continuum approach classifies yield along a spectrum, bound by nonuse and maximum mining, rather than determining a single aquifer yield value. The concept depends on quantifying hydrogeological parameters such as recharge, discharge, and aquifer volume. Environmental flow needs and input from local stakeholders and the community can be accounted for in order to manage the degree of impact of groundwater withdrawal on the hydrological system. Methods used to quantify each of these hydrogeological parameters depend on data availability, hydrogeological regime, climate, and landscape characteristics of the study area. As depression-focussed recharge is the dominant recharge mechanism on the Canadian Prairies, a method incorporating terrain analysis, identification of upland and depression characteristics, and simulation of surface runoff into depressions was used to estimate recharge throughout southern Alberta. Discharge was inferred based on recharge, and aquifer volumes to a depth of 150 m below ground surface were estimated from the AGS's 3D Provincial Geological Framework Model of Alberta. Aquifer yields are calculated on a watershed basis and results show that recharge ranges from 4 to 36 mm/yr with recharge decreasing from the northwest towards the southeast, following regional climatic gradients. Maximum sustained yield, after which groundwater mining will start to occur, ranges from 0.2E7 to 13E7 m3/yr; however, there is less of a spatial trend in the yield values compared to recharge as volumetric yield is influenced by the size of a given watershed. Groundwater abstraction equal to the maximum sustained yield would have a significant impact on the hydrogeological system, including major impacts to surface water bodies. Permissive sustained yield, calculated as 10% of the maximum sustained yield in this study therefore provides an order of magnitude presumptive standard for yield in the absence of detailed studies in a given area.  Groundwater is an important resource for many stakeholders in Alberta. Quantifying the availability of groundwater is necessary for understanding current water use versus availability and evaluating risks associated with potential development scenarios. The aquifer yield results of this study can be used to assess potential, order of magnitude, regional groundwater yields and to compare relative differences between watersheds. Additionally, results can be used as a screening or risk assessment tool to identify watersheds of interest, where further groundwater assessments could be conducted considering local knowledge and specific scenarios. The aquifer yield continuum methodology can be adapted and utilized to focus the assessment of aquifer yield to the specific area of interest, incorporating local knowledge of the groundwater system and desires of the community and stakeholders. Place Keywords 72e 72l 72m 73d 73e 73l 82g 82h 82i 82j 82o 82p 83a 83b 83g 83h 83i 83j alberta canada southern alberta Theme Keywords aquifers geology groundwater hydrogeology recharge resource management water resources yield zones

Klassen, J.  Liggett, J.E.  Pavlovskii, I.  Abdrakhimova, P.  2018-10-23

OFR 2017-05

Hydrogeological Overview of the Edmonton-Calgary Corridor, Central Alberta

Hydrogeological Overview of the Edmonton-Calgary Corridor, Central Alberta The Edmonton-Calgary Corridor (ECC) occupies approximately 50 000 km2 of Alberta and presents a wide variety of hydrogeological conditions. In addition to a description of ... Show Abstract

Riddell, J.T.F.  Lyster, S.  2017-09-08

OFR 2017-07

First-Order Groundwater Availability Assessment for Central Alberta

First-Order Groundwater Availability Assessment for Central Alberta The aquifer-yield continuum classifies groundwater yield along a spectrum that helps define total groundwater availability and is bound by two extremes: non-use and maximum ... Show Abstract

Klassen, J.  Smerdon, B.D.  2018-02-14

DIG 2017-0001

Calgary-Lethbridge Corridor Geophysical Survey: Compilation of Airborne AeroTEM System Electromagnetic and Magnetic Survey Data (digital data, various formats)

The total survey coverage was 18,645 square kilometres, consisting of 28,229 line-km in a single block flown in a 163/343 degree direction using a flight line spacing of 750 m and tie-lines at 7500 m spacing. The AeroTEM study digital deliverables ... Show Abstract

Fildes, B.J., comp.  2018-09-17

DIG 2017-0024

Groundwater Yield Matrix for Central Alberta (GIS data, polygon features)

Groundwater Yield Matrix for Central Alberta (GIS data, polygon features) The classes within the yield matrix from most conservative to maximum mining are: permissive sustained yield, maximum sustained yield, sustained yield, permissive mining ... Show Abstract

Klassen, J.  Smerdon, B.D.  2018-02-14