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Table 1

Observed annual (Ann.) and seasonal (December–January–February: DJF; March–April–May: MAM; June–July–August: JJA and September–October–November: SON) runoffs and trends for the Hay, Liard and Peel Rivers corresponding to the period of water quality records

RiversWSC stationsDrainage area (km2)YearsRunoff [mm]
Runoff trend [% change per decade]
Ann.DJFMAMJJASONAnn.DJFMAMJJASON
Hay Hay River near the Hay River (070B003) 51,300 1988–2012 72 24 33 13 0.9 10.5 −2.9 0.7 5.4 
Liard Liard River near the mouth (10ED002) 275,000 1972–2012 289 16 54 164 55 3.2 9.5 4.2 0.9 6.5 
Peel Peel River above Fort McPherson (10MC002) 70,600 1979–2012 306 12 76 163 55 −0.4 11.3 4.0 −8.7 10.5 
RiversWSC stationsDrainage area (km2)YearsRunoff [mm]
Runoff trend [% change per decade]
Ann.DJFMAMJJASONAnn.DJFMAMJJASON
Hay Hay River near the Hay River (070B003) 51,300 1988–2012 72 24 33 13 0.9 10.5 −2.9 0.7 5.4 
Liard Liard River near the mouth (10ED002) 275,000 1972–2012 289 16 54 164 55 3.2 9.5 4.2 0.9 6.5 
Peel Peel River above Fort McPherson (10MC002) 70,600 1979–2012 306 12 76 163 55 −0.4 11.3 4.0 −8.7 10.5 

Note: Runoffs are obtained by normalizing the Water Survey of Canada (WSC) hydrometric station streamflow data by basin areas. The trends are expressed as % change per decade with respect to the mean of the period and values in bold indicate statistically significant trends (at the 5% significance level).

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