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Statistical Analysis of Trends in the Red River Over a 45 Year Period

Statistical Analysis of Trends in the Red River Over a 45 Year Period

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05102500 RED RIVER OF THE NORTH AT EMERSON<br />

dtds<br />

POINTS: RECORDED DATA<br />

LINE: STREAMFLOW!RELATED ANOMALY + TREND<br />

CONCENTRATION, AS BASE!10 LOGARITHM<br />

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CONCENTRATION, AS BASE!10 LOGARITHM<br />

2 2.5 3 3.5<br />

1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010<br />

1955 1960 19<br />

500 RED RIVER OF THE Figure NORTH A.74: AT EMERSON, Total Dissolved MANITOBA Solids concentrations (po<strong>in</strong>ts) and streamflow related<br />

dtds<br />

POINTS: SEASONALLY ADJUSTED AND FLOW!ADJUSTED DATA<br />

anomaly + trend (l<strong>in</strong>e)<br />

LINE: TREND<br />

+ TREND<br />

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CONCENTRATION, CONCENTRATION, AS BASE!10 BASE!10 LOGARITHM LOGARITHM<br />

2 2 2.5 2.5 3 3 3.5 3.5<br />

POINTS: SEASONALLY ADJUSTED AND DETRENDED DATA<br />

LINE: ANNUAL STREAMFLOW!RELATED ANOMALY<br />

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1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010<br />

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RESIDUAL<br />

!4 !3 !2 !1 0 1 2 3 4<br />

1955 1960 19<br />

1995 2000 2005 2010 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010<br />

JUSTED DATA<br />

Figure A.75: Total Dissolved Solids Flow Adjustments — Seasonally adjusted and<br />

POINTS: PARMA MODEL RESIDUALS<br />

LINE: LOWESS SMOOTH WITH F= 0.5<br />

de-trended data (po<strong>in</strong>ts) and annual streamflow-related anomaly (l<strong>in</strong>e).<br />

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