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Endangered and Threatened Species of the Platte River (2004)
Board on Environmental Studies and Toxicology (BEST)
 Water Science and Technology Board (WSTB)

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. "Appendix D: Input Data for Figures 5-6 a and 5-6b." Endangered and Threatened Species of the Platte River. Washington, DC: The National Academies Press, 2004.

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The following HTML text is provided to enhance online readability. Many aspects of typography translate only awkwardly to HTML. Please use the page image as the authoritative form to ensure accuracy.

Endangered and Threatened Species of the Platte River

Year

Use-Days

Sightings

Populationa

Ratio

Use Ratio

1983

13

8

75

0.10667

0.17333

1984

0

0

86

0

0

1985

10

7

97

0.07216

0.10309

1986

12

3

110

0.02727

0.10909

1987

40

5

134

0.03731

0.06716

1988

41

3

138

0.02174

0.2971

1989

34

8

146

0.05479

0.23288

1990

12

6

146

0.0411

0.08219

1991

0

0

132

0

0

1992

25

15

136

0.11029

0.18382

1993

19

10

143

0.06993

0.13287

1994

18

14

133

0.10526

0.1203

1995

14

8

158

0.05063

0.08861

1996

34

15

160

0.09375

0.2125

1997

80

10

182

0.05495

0.43956

1998

120

10

183

0.05464

0.65574

1999

24

5

188

0.0266

0.12766

2000

45

4

180

0.02222

0.19444

2001

7

7

176

0.04545

0.1875

2002

151

17

185

0.08649

0.67568

aPopulation data are from Lewis et al. (1994) and Canadian Wildlife Service and U.S. Fish and Wildlife Service, unpublished report (2003).
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