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Reservoirs and their Roles on the
Aquatic Landscape of the Gulf Coast
Prairie LCC
Jeff Boxrucker Reservoir Fisheries Habitat Partnership June 17, 2014
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Mission - The Reservoir Fisheries Habitat Partnership is a national partnership established to promote and facilitate the conservation of habitat for fish and other aquatic species in reservoir systems through collaborative actions that contribute to:
• The ecological health and function of reservoirs and their associated waters and watersheds
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“The same ecosystem functions that provide for sustainable fish and wildlife populations also provide communities with significant benefits, such as good water quality, flood and fire protection, and recreation.”
U. S. Fish and Wildlife Service Rising to the Challenge: Strategic Plan for Responding to Accelerating Climate Change September 2010
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Results of lower-48 assessment Impaired Stream Reaches (NFHP 2010)
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IRHI
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1,351 Survey Responses
Scope Impounded rivers ≥100 hectares
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western mountains
xeric
southern plains
northern plains
temperate plains
upper midwest
southern Appalachians
coastal plains
northern Appalachians
EPA wadeable stream assessment NFHP (Michigan State)
Nine EPA ecoregions
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water regime, structure, nutrients, siltation,
connectivity, degraded shorelines structure,
siltation, nutrients,
connectivity, degraded
shorelines, water regime
structure, nutrients, water regime, siltation, connectivity, degraded
shorelines
Structure, siltation, nutrients,
connectivity,
nutrients, siltation, excessive veg., structure, connectivity, degraded
shorelines
structure ,siltation, excessive veg.,
connectivity, nutrients, water regime
excessive veg., siltation, structure, connectivity,
degraded shorelines, nutrients,
structure, siltation, nutrients, excessive
veg., degraded shorelines, water
regime
degraded shorelines, water regime
Western Mountains
Xeric
Northern Plains
Southern Plains
Temperate Plains
Upper Midwest
Northern Appalachians Coastal Plains
Southern Appalachians
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INDEX OF RELATIVE
HABITAT INTEGRITY
f construct I of the n constructs that make up the IRHI,
f mean score for the j metrics with loadings > 0.6 in the i factor, and m metric i of the j metrics that make up f
Miranda, L. E., and K. M. Hunt. 2010. An index of reservoir
habitat impairment. Environmental Monitoring and
Assessment172:225-234.
Miranda, L. E., M. Spickard, T. Dunn, K. M. Webb, J. N.
Aycock, and K. Hunt. 2010. Fish habitat degradation in U.S.
reservoirs. Fisheries 35(4):176-184.
IRHI= f + f +1 + …….. + f f = 1 if 0 < f 3 if 1.5 < f < 3.5; 5 if 3.5 < f < 5
𝑓 =𝑚 + 𝑚 + … … + 𝑚
𝑗
i+1 j
i
i i i i
i
i
i
n
i
i
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64 reservoirs
USACE IMPOUNDMENTS SW DIVISION
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51.6 % Insufficient Vegetation/Invasive Aquatic Plants
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34.4% Sedimentation Issues (scored 4 or 5)
• >5,000 acres of new land at TNWR
• Ca. 80 acres/year
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Sedimentation Affects Widow Moore Cove-Washita River Arm of Lake Texoma
1969
1991
1983
2003
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27.9% Loss of Cove Habitat
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27.4% Excessive Suspended Sediments
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23.8% Excessive Littoral Mudflats
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993
994
995
996
997
998
999
1000
1001
1002
1003
Jan March May July Sept Nov
20.6% Unfavorable Seasonal Rule Curve
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20% Insufficient Structure
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B.A. Steinhagen
Bardwell
Navarro Mills
Heyburn
Texoma
Hugo
Great Salt Plains
Marion
Fall River
Elk City
10 most impaired
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Sam Rayburn
Hords Creek
Whitney
Pat Mayse
Birch
Lake O’ the Pines
Gilham
DeQueen
Dierks
Wright Patman
10 least impaired
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Prioritization Parameters
• Habitat Impairments
• Recreational Use/Economic Value
• Amount of Public Land
• Available Funding
• Willing Partners
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0
5
10
15
20
25
30
35
U.S. Texas Oklahoma
Total Anglers Anglers Reservoirs and Lakes
Nu
mb
er
of
An
gle
rs (
mill
ion
s)
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0
5
10
15
20
25
30
35
40
45
U.S. Texas Oklahoma
Total Anglers
Exp
en
dit
ure
s (b
illio
ns)
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Reservoir Construction vs. No. Anglers Fishing Reservoirs & Lakes
0
5
10
15
20
25
30
35
40
45
50
0
100
200
300
400
500
600
1905 1915 1925 1935 1945 1955 1965 1975 1985 1995 2005 2010
An
gle
rs R
ese
rvo
irs/
Lake
s (m
illio
ns)
Nu
mb
er
of
new
re
serv
oir
s
Year
New Reservoirs
Reservoir/Lake Anglers