PRRIP Draft Environmental Impact Statement

• Description: DRAFT EIS for Platte River Recovery Implementation Program or PRRIP
• State: CO
• State: NE
• State: WY
• Basin: South Platte
• Water Division: 1
• Date: 12/1/2003
• Author: U.S Department of the Interior Bureau of Reclamation U.S. Fish and Wildlife Service
• Title: Platte River Recovery Implementation Program ‎(PRRIP)‎ Draft Environmental Impact Statement
• Water Supply Pro - Doc Type: EIS

FIGURES
Page
3 -10 Cross - section of the river on Cottonwood Ranch, illustrating the
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types of channel restoration activities described in this scenario ............
3 -49
3 -11
Water elements map for Water Leasing Alternative .........................
follows 3 -50
3 -12
Water elements map for Wet Meadow Alternative ..........................
follows 3 -52
3 -13
Water elements map for Water Emphasis Alternative .......................
follows 3 -56
4 -1
Central Platte schematic displaying average annual flow ........................
4 -7
4 -2
Changes in groundwater levels in the Platte Valley, Nebraska, from
predevelopmentto 2000 ............... ...............................
4 -27
4 -3
Present Condition. Cumulative sand transport and cumulative sand
deposition, after 13 years of simulation, are plotted versus river mile ...........
4 -35
4 -4
Present Condition. Cumulative sand transport and cumulative sand
deposition, after 61 years of simulation, are plotted versus river mile ...........
4 -36
4 -5
Present Condition. Longitudinal profile of the Platte River channel
bottom after 61 years and the changes in channel bottom elevation
are plotted versus river mile ............ ...............................
4 -36
4 -6
Predicted water surface elevation at river mile 210 over the 61 -year
period of simulation .................. ...............................
4 -38
4 -7
Predicted water surface elevation at a cross section located at river
mile 194 over the entire 61 years of simulation ............................
4 -39
4 -8
Width of total of water after 13 and 16 years is plotted versus
rivermile .......................... ...............................
4 -41
4 -9
Total dissolved solids of the North Platte Basin from upstream from
Seminoe Reservoir, Wyoming, to upstream of Lake McConaughy,
Nebraska........................... ...............................
4 -45
4 -10
Specific conductance data for the South Platte River at Julesburg
for the period of record 1951 -1995 ...... ...............................
4 -52
4 -11
Comparison between the mean monthly specific conductance for the
historic record and the Present Condition as represented by the
supplemented historic record ........... ...............................
4 -54
4 -12
Historic and Present Condition turbidity distributions ..........................
4 -59
4 -13
Selenium concentrations (micrograms per liter) from sampled wells in the
Phelps and Kearney Counties' segment of the groundwater mound
and potential conjunctive use areas ...... ...............................
4 -61
4 -14
GIS bridge segment map ............... ...............................
follows 4 -62
4 -15
Distribution of wide channels in the Central Platte River Habitat
Area Under the Present Condition .... ...............................
4 -72
4 -16
Whooping crane habitat as a function of riverflow, as modeled by the
Biology Workgroup ............... ...............................
4 -73
4 -17
Amount (acres) and distribution of bottomland grassland along the
Central Platte River ............... ...............................
4 -77
4 -18
Percent sandhill crane observations from 13 bridge segments between
Lexington and Chapman, Nebraska, 1980 -1999 ........................
4 -120
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