Comparison of Kemp, Fletcher, Redfish and Bjerkness Creek Watersheds

Chris Gray, Katie Ward, Melissa MacLeodSelkirk College, Castlegar

Hans Schreier, Martin Carver and Arelia Werner

UBC, Aqua Environmental and PCIC

Figure 1. General study area of the watersheds of interest within Kootenay Lake watershed.

Table 2. Watershed Characteristics

MeasureRedfish Creek Kemp Creek Fletcher Creek Bjerkness Creek

Watershed code 340-186300 340-215300-16300 340-214600 340-215000

Aspect S NE E E

Length (km) 8.69 6.46 9.28 10.23

Watershed Area (ha) 2729.1 1271.3 1785.3 2706.6

Min Elevation(m) 532 659 532 548

Max Elevation (m) 2362 2429 2520 2566

Elevation change (m) 1830 1770 2018 1988

Stream magnitude 10 5 2 11

H60 (m) 1700 (H65) 1860 1700 1700

Shape Teardrop Teardrop Elliptical Elliptical

% lakes 0.75 1.23 0.70 0.84

Elevation Slicing in the 4 Watershed in the West Kootenays

0.002.004.006.008.00

10.0012.0014.0016.0018.00

Elevation Zone in m

% o

f w

ate

rsh

ed

in

ele

vati

on

zo

ne

Kemp Redfish Fletcher Bjerkness

Cumulative area of The watershed by Elevation Range (Difference between 4 Watersheds)

0.010.020.030.040.050.060.070.080.090.0

100.0

Elevation range in m

% C

um

ula

tiv

e A

rea

Kemp Redfish Fletcher Bjerkness

Summary of ComparisonHans Schreier, Martin Carver, Arelia Werner

• Size: Redfish and Bjerkness = same size, Kemp Half the size

• Aspect: Redfish = South Aspect Kemp, Fletcher, Bjerkness East Aspect

• Geology: Redfish = Granodiorite, Kemp Granodiorite, Limestone, Basalt, Fletcher & Bjerkness :Granodiorite, Limestone, Slate, Mudstone Basalt, Granite

• Stream Length: 6-10km (Kemp 6, Bjerkness 10km)

• Elevation Range: All between 1770-2000 m

• Minimum Elevation: all 530-550 m exept Kemp starts at 660 m

• Elevation Slicing: Kemp & Redfish have very similar spatial distribution over the elevation range (less than 10 % of area below 1200m elevation)

Bjerkness & Fletcher ) similar but 25-30% of area <1200 m elevation

• % Area in Lakes: All < 1.2%

Kemp, Redfish, Fletcher, Bjerkness Creeks

Redfish Calibrations

Kemp 2010-2060

Redfish 2010-2060

Fletcher 2010-2060

February Discharge Comparison - Redfish Creek

0.000

0.200

0.400

0.600

0.800

1.000

1.200

1.400

1.600

1968

1971

1974

1977

1980

1983

1986

1996

1999

2002

2005

2008

m3/

sec

Measured

ccsm3_A1B

echo_g_A1B

pcm1_A1B

Mean

March Discharge Comparison - Redfish Creek

0.000

0.500

1.000

1.500

2.000

2.500

3.000

1968

1971

1974

1977

1980

1983

1986

1996

1999

2002

2005

2008

m3/

sec

Measured

ccsm3_A1B

echo_g_A1B

pcm1_A1B

Mean

April Discharge Comparison - Redfish Creek

0.000

0.500

1.000

1.500

2.000

2.500

19681971

19741977

19801983

19861995

19982001

20042007

m3/

sec

Measured

ccsm3_A1B

echo_g_A1B

pcm1_A1B

Mean

January Discharge Comparison - Redfish Creek

0.000

0.200

0.400

0.600

0.800

1.000

1.200

1.400

m3

/se

c

Measured

Mean

ccsm3_A1B

pcm1_A1B

echo_g_A1B

Comparison Between Measured Mean Monthly Discharge (Redfish) and Selective Model Projections Jan-Apr. (Mean = 7 – A1B Scenarios)

May Discharge Comparison - Redfish Creek

0.0000.5001.0001.5002.0002.5003.0003.5004.0004.5005.000

m3/

sec

Measured

ccsm3_A1B

echo_g_A1B

pcm1_A1B

Mean

June Discharge Comparison - Redfish Creek

0.000

1.000

2.000

3.000

4.000

5.000

6.000

7.000

m3/

sec

Measured

ccsm3_A1B

echo_g_A1B

pcm1_A1B

Mean

July Discharge Comparison - Redfish Creek

0.000

0.500

1.000

1.500

2.000

2.500

3.000

3.500

4.000

1968

1971

1974

1977

1980

1983

1986

1993

1996

1999

2002

2005

2008

m3/

sec

Measured

ccsm3_A1B

echo_g_A1B

pcm1_A1B

Mean

August Discharge Comparison - Redfish Creek

0.000

0.2000.400

0.6000.800

1.000

1.2001.400

1.600

19671970

19731976

19791982

19851995

19982001

20042007

m3/

sec

Measured

ccsm3_A1B

echo_g_A1B

pcm1_A1B

Mean

Comparison Between Measured Monthly Discharge (Redfish) and Selective Model Projections May-Aug (Mean = 7 A1B scenarios)

September Discharge Comparison -Redfish Creek

0.0000.1000.2000.3000.4000.5000.6000.7000.8000.9001.000

19671970

19731976

19791982

19851995

19982001

20042007

m3/

sec

Measured

ccsm3_A1B

echo_g_A1B

pcm1_A1B

Mean

October Discharge Comparison - Redfish Creek

0.000

0.200

0.400

0.600

0.800

1.000

1.200

19671970

19731976

19791982

19851995

19982001

20042007

m3/

sec

Measured

ccsm3_A1B

echo_g_A1B

pcm1_A1B

Mean

November Discharge Comparison - Redfish Creek

0.0000.2000.4000.6000.8001.0001.2001.4001.6001.800

19671970

19731976

19791982

19851995

19982001

20042007

m3/

sec

Measured

ccsm3_A1B

echo_g_A1B

pcm1_A1B

Mean

December Discharge Comparison - Redfish Creek

0.0000.1000.2000.3000.4000.5000.6000.7000.8000.9001.000

19671970

19731976

19791982

19851995

19982001

20042007

m3/

sec

Measured

ccsm3_A1B

echo_g_A1B

pcm1_A1B

Mean

Comparison Between Measured Monthly Discharge (Redfish) and Selective Model Projections May-Aug (Mean = 7 A1B scenarios)

Summary of Calibration – Redfish Creek

• All Projections are higher for the February-April period than the measured values (Largest over-estimation of discharge in April)

• June – July projections are all below measured values (June shows has the greatest differences)

• November-December projections are usually below measured values

• Conclusions: • 1. Redfish peak flow projections in April might be too high• 2. Redfish early summer flow projections might be too low

Kemp Creek Discharge Projections 2010-2039(Mean of 10 – A1B Scenarios)

Mean Monthly Discharge Jan-Mar in Kemp Creek 2010-2039 (Mean of 10 A1B Hybrid Scenarios)

0.0000.0100.0200.0300.0400.0500.060

20102012

20142016

20182020

20222024

20262028

20302032

20342036

2038

m3/

sec

Jan Feb Mar

Mean Monthly Discharge in Apr-Jun in Kemp Creek 2010-2039 (Mean of 10 - A1B Hydrid Scenarios)

0.000

0.050

0.100

0.150

0.200

0.250

2010

2012

2014

2016

2018

2020

2022

2024

2026

2028

2030

2032

2034

2036

2038

m3/

sec

Apr May JunLinear (May) Linear (Jun)

Mean Monthly Discharge Jul-Sep in Kemp Creek 2010-2039 (Mean of 10 - A1B Hybrid Scenarios)

0.0000.0100.0200.0300.0400.0500.0600.070

2010

2012

2014

2016

2018

2020

2022

2024

2026

2028

2030

2032

2034

2036

2038

m3/

sec

Jul Aug SepLinear (Jul) Linear (Aug) Linear (Sep)

Mean Monthly Discharge in Oct-Dec in Kemp Creek 2010-2039 (Mean of 10 - A1B Hybrid Scenarios)

0.000

0.010

0.020

0.030

0.040

2010

2012

2014

2016

2018

2020

2022

2024

2026

2028

2030

2032

2034

2036

2038

m3/

sec

Oct Nov Dec

April-June Transient Mean Monthly Discharge Projections in Redfish Creek 1950-2100 (Mean of 13 Scenarios)

0

0.5

1

1.5

2

2.5

3

3.5

1951

1958

1965

1972

1979

1986

1993

2000

2007

2014

2021

2028

2035

2042

2049

2056

2063

2070

2077

2084

2091

2098

m3/

sec

Apr May Jun

January-March Transient Mean Monthly Discharge Projections in Redfish Creek 1950-2100 (Mean of 13 Sceanrios)

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1951

1958

1965

1972

1979

1986

1993

2000

2007

2014

2021

2028

2035

2042

2049

2056

2063

2070

2077

2084

2091

2098

m3/

sec

mo

nth

ly

Jan Feb Mar

Redfish Creek Discharge Trends

July-September Transient Mean Monthly Discharge Projections in Redfish Creek 1950-2100 (Mean of 13 Scenarios)

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

2

1951

1958

1965

1972

1979

1986

1993

2000

2007

2014

2021

2028

2035

2042

2049

2056

2063

2070

2077

2084

2091

2098

m3/

sec

mo

nth

ly

Jul Aug Sep

October-December Transient Mean Monthly Discharge Projections in Redfish Creek 1950-2100 (Mean of 13 Scenarios)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

1951

1958

1965

1972

1979

1986

1993

2000

2007

2014

2021

2028

2035

2042

2049

2056

2063

2070

2077

2084

2091

2098

m3/

sec

Oct Nov Dec

January-March Transient Mean Monthly Discharge in Fletcher Creek (1950-2100 (Mean of 13 Scenarios)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

m3/

sec

mo

nth

ly

Jan Feb Mar

April-June Transient Mean Monthly Discharge Projection in Fletcher Creek 1950-2100 (Mean of 13 Scenarios)

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

m2/

sec

mo

nth

ly

Apr May Jun

Fletcher Creek Discharge Trends

October-December Transient Mean Monthly Discharge Projections in Fletcher Creek 1950-2100 (Mean of 13 Scenarios)

0

0.1

0.2

0.3

0.4

0.5

0.6

1951

1957

1963

1969

1975

1981

1987

1993

1999

2005

2011

2017

2023

2029

2035

2041

2047

2053

2059

2065

2071

2077

2083

2089

2095

m3/

sec

mo

nth

ly

Oct Nov Dec

July-September Transient Mean Monthly Discharge Projections in Fletcher Creek 1950-2100 (Mean of 13 Scenarios)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

1951

1957

1963

1969

1975

1981

1987

1993

1999

2005

2011

2017

2023

2029

2035

2041

2047

2053

2059

2065

2071

2077

2083

2089

2095

m3/

sec

mo

nth

lyJul Aug Sep

Summary of Projections for Redfish and Fletcher Creek Discharge

• October-April significant increases in discharges over time with largest increases in March and April

• May Discharge remains the same

• June – September mean monthly discharge declines with the largest declines in June and July

• Redfish Creek Mean Monthly Discharge is mostly double of Fletcher for March-August and slightly higher for September- February (Fletcher Catchment area is about 65% less than Redfish). Kemp Creek discharge is about one order of magnitude lower than Redfish ( Kemp Catchment area is about 46% less than Redfish)

• Kemp is less productive in producing water than Redfish and Fletcher)

Estimates (not to be used)

Projected Mean Monthly Discharge Kemp Creek Mar-May Hybrid Model 2010-2039

0100000

200000300000

400000500000

600000700000

2010

2012

2014

2016

2018

2020

2022

2024

2026

2028

2030

2032

2034

2036

2038

m3/

mon

th

Mar Apr May

Projected Mean Monthly Discharge in Kemp Creek Jul-Sep Hybrid Model 2010-2039

020000400006000080000

100000120000140000160000180000

2010

2012

2014

2016

2018

2020

2022

2024

2026

2028

2030

2032

2034

2036

2038

m3/

mon

th

Jul Aug Sep

Projected Mean Monthly Discharge in Kemp Creek Oct-Dec Hybrid Model 2010-2039

0

20000

40000

60000

80000

100000

2010

2012

2014

2016

2018

2020

2022

2024

2026

2028

2030

2032

2034

2036

2038

m3/

mon

h

Oct Nov Dec