Prairie Provinces Water Board

The MAA provides for an equitable sharing of available waters for all eastward flowing streams that cross interprovincial boundaries, including lakes and serves to protect transboundary aquifers and surface water quality.

Contact Us

Prairie Provinces Water Board
10th Floor, Alvin Hamilton Building
1783 Hamilton Street
Regina, SK  S4P 4K1

Telephone: (306) 564-4462
Fax: (306) 780-6810
Email: Leslie.Rankin@canada.ca

www.ppwb.ca

Middle Creek


Apportionable flows are calculated at Middle Creek near the Alberta-Saskatchewan Border (station 11AB009)

The black bar shows the amount of apportionable flows that were required to be delivered by Alberta to Saskatchewan.  The white bar shows the flow surplus amounts that were delivered in excess of required flows.  The red bar indicates amounts of required flows that were not delivered (i.e., deficits).  The combined area indicates recorded flow as the amounts of flow deficits are subtracted from the provincial share.  The required provincial share is the combined area of the black and red bars. On the y-axis, the number following the "e" in the Scientific Notation shows how many zeros should be placed to the right of the decimal place.

 

Under the principle of equitable sharing in the Master Agreement on Apportionment, Saskatchewan's share of apportionable flows of Middle Creek is 75% to enable the use of the waters by Saskatchewan and still fulfill Canada's committments to deliver 50% of the Milk River into the USA. Middle Creek feeds into the Milk River in Saskatchewan.

Alberta has met their delivery requirement throughout the data record, except for five years (1988, 1989, 1998, 2000 and 2008) which had deficits in delivery. The Board representatives of Alberta and Saskatchewan engaged in discussions on how to avoid these deficits, and managed to resolve the issues before conflicts developed. Middle and Lodge Creeks are the only rivers that the Prairie Provinces Water Board that has ever had any deficits.

You can copy and paste flow data presented below into a spreadsheet or word processing file. You can also download a MS Excel file from the right side bar.

 

Year

Recorded Flow

Apportionable Flow

                    (Unit: dam3)

 1985

5,840

6,960

 1986

9,464

10,500

 1987

7,389

7,955

 1988

643

880

 1989

387

610

 1990

2,646

3,068

 1991

2,701

3,305

 1992

168

197

 1993

9,301

10,547

 1994

8,599

8,837

 1995

194

184

 1996

14,680

15,418

 1997

6,463

7,983

 1998

115

329

 1999

405

505

 2000

47

76

 2001

21

21

 2002

2,412

3,187

 2003

1,922

2,493

 2004

703

909

 2005

704

813

 2006

2,744

3,080

 2007

911

1,165

 2008

392

652

 2009

245

288

 2010

8,950

9,600

Total 88,046 99,562
 

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Page last modified: 10 April 2019 11:01

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