Southside FloodProtection
Red River Channel ExtensionClay County Courthouse
September 8, 2008
1997 Spring Flood –Fargo, Moorhead
Rose Coulee
Red River
Fargo
50th Avenue South
Moorhead
Univ
ers
ity D
rive
1997 Spring Flood – South of Fargo
Rose CouleeRed River
25th S
treet
Sou
th
Fargo
University DriveMoorhead
60th Ave. SW
Preliminary 100 & 500 Year
Floodplains
Oxbow
Horace
MoorheadWest Fargo
FargoInterstate Hwy 94
Inte
rsta
te H
wy 2
9
Southside Flood
Control
RED RIVER AT FARGO - USGS GAGING STATIONHISTORICAL FLOOD DATA
0
5,000
10,000
15,000
20,000
25,000
30,000
35,000
1880 1890 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000
Years of Record
50 Year Discharge - 22,300 CFS
10 Year Discharge - 10,300 CFS
100 Year Discharge - 29,300 CFS
Pea
k D
isch
arge
(CFS)
1997 Spring Flood - 28,000 CFS
Southside Flood Control
North Dakota State Climate Office
• FEMA levees with and without diversion channels
• Channel extensions(Red River & drain improvements)
• Storage inside of project
• Storage in upstream watershed
Project Flood Control Methods
Base Project
Southside Flood
Control
Wild Rice River Levee
Alternative
Issues Raised With Base Alternatives• Red River & Wild Rice River impacts
(Higher flood levels)
• Lost storage (Concern storage impact will simply move impacts upstream)
• Properties east of Hwy 81 and upstream receive no protection
Base Project withChannel Extensions
& Recoverable Storage
Southside Flood
Control
Wild Rice River Levee
Alternative
Rose CouleePump Station
& Closure Structure
North Dakota
Minnesota
Red River
Red RiverChannel
Extension
Typical Red River Cross-Section
STORAGE SUMMARYExisting effective storage 6,000 Acre-Ft
Base project 0 Acre-Ft
Channel extension/storage 2,000 Acre-Ft
Supplemental storage 4,000 Acre-Ft
STORAGE
Southside Flood
Control
100 Year Frequency - Red River Stage Changes in Inches
Base Project with Channel Extensions & Supplemental Storage
LocationWild Rice
River Levees
70th Ave So Outlet
Rose Coulee Outlet
Wild Rice River
Diversion
Wild Rice River
BypassInterstate 94 0 0 0 0 0
Rose Coulee 0 0 0 0 0
Briarwood -6 -6 -8 -6 -6
76th Avenue -7 -7 -11 -7 -7
Wild Rice River -8 -5 -12 -8 -8
Cass Hwy 16 -4 -4 -9 -4 -5
Oxbow -1 -1 -2 -1 -2
Cass Hwy 18 -1 -1 -2 -1 -1
SOUTHSIDE FLOOD CONTROL
Wild Rice River Levees Alternative – Red River Impacts
SOUTHSIDE FLOOD CONTROLIn
ters
tate
94
Ros
e C
oule
e
Bria
rwoo
d
76th
Ave
Wild
Ric
e R
iver
Cas
s H
wy
16 B
ridge
Cas
s H
wy
18 B
ridge
-10.0
-8.0
-6.0
-4.0
-2.0
0.0
2.0
4.0
6.0
8.0
10.0
12.0
455 460 465 470 475 480 485 490
Sta
ge
Ch
ang
e (I
nch
es)
River Mile
Southside Flood ControlRed River Stage Change - 100 Year Event
Wild Rice River Levees Alternative
w/ Supplemental Storage w/ Levees East of Hwy 81
Zero Impact Line
Red River Flood Timing
Red River - Average Channel Velocity Comparison
Wild
Ric
e R
iver
Cas
s H
wy
16 B
ridge
Mai
n A
ve B
ridge
Inte
rsta
te 9
4
Ros
e C
oule
e
Bria
rwoo
d
76th
Ave
nue
Sou
th
Cas
s H
wy
18 B
ridge
52nd
Ave
Bri
dge
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
450.00 455.00 460.00 465.00 470.00 475.00 480.00 485.00 490.00
River Miles
Ave
rag
e C
han
nel
Vel
oci
tyProject Existing
0.36 fps
Red River - Average Channel Velocity Change
Wild
Ric
e R
iver
Cas
s H
wy
16 B
ridge
Mai
n A
ve B
ridge
Inte
rsta
te 9
4
Ros
e C
oule
e
Bria
rwoo
d
76th
Ave
nue
Sou
th
Cas
s H
wy
18 B
ridge
52nd
Ave
Bri
dge
-0.100
0.000
0.100
0.200
0.300
0.400
0.500
0.600
0.700
0.800
450.00 455.00 460.00 465.00 470.00 475.00 480.00 485.00 490.00
River Miles
Vel
oci
ty C
han
ge
- F
eet
per
Sec
on
d
Red River - 100 Year Flood - 32nd Ave So./River Oaks Park
880
885
890
895
900
905
9103/
24
3/26
3/28
3/30 4/
1
4/3
4/5
4/7
4/9
4/11
4/13
4/15
4/17
Wat
er S
urfa
ce E
leva
tion
Existing
Project
Red River - 100 Year Flood - 32nd Ave So./River Oaks Park
904.00
904.25
904.50
904.75
905.004/
2
4/4
4/6
4/8
Wat
er S
urfa
ce E
leva
tion
Existing
Levees Only
Project
0.72 Inches
26 Hours
Red River - 100 Year Flood - 52nd Ave So.
885
890
895
900
905
9103/
24
3/26
3/28
3/30 4/
1
4/3
4/5
4/7
4/9
4/11
4/13
4/15
4/17
Wat
er S
urfa
ce E
leva
tion
ExistingProject
Red River - 100 Year Flood - 52nd Ave S./60th Avenue SW
906.0
906.5
907.0
907.5
908.04/
1
4/3
4/5
4/7
4/9
Wat
er S
urfa
ce E
leva
tion
Existing
Levees Only
Project26 Hours
3.2 Inches
1997 Spring Flood – South of Fargo
Rose CouleeRed River
25th S
treet
Sou
th
Fargo
University DriveMoorhead
Southside Flood Control
Red River Channel
Extension Options
Southside FloodProtection
Red River Channel Extension Fly Through
1997 Spring Flood – South of Fargo
Interstate 29
Cass
Co
Hw
y 81
25th Street S
outh
Project ScheduleDevelopment of options east of University DriveDevelopment of options east of University Drive April-June 2008April-June 2008
City Commission Selection of preferred base City Commission Selection of preferred base alternativealternative
July 14, 2008July 14, 2008
Public input meetingsPublic input meetings April 15 - September 2008April 15 - September 2008
Environmental AssessmentEnvironmental Assessment July – December 2008July – December 2008
Consultant SelectionConsultant Selection July - September 2008July - September 2008
Begin DesignBegin Design October 2008October 2008
CLOMR SubmittalCLOMR Submittal July – October 2008July – October 2008
CLOMR ApprovalCLOMR Approval December 2008December 2008
ROW AcquisitionsROW Acquisitions October 2008 – October 2009October 2008 – October 2009
PermittingPermitting September 2008 – April 2009September 2008 – April 2009
Special Assessment DistrictSpecial Assessment District September – December 2008September – December 2008
Begin ConstructionBegin Construction June 2009June 2009
Functional CompletionFunctional Completion March 2011March 2011
Final CompletionFinal Completion July 2012July 2012
Questions / Discussion
Southside Flood Control
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