7049

• UCREFRP Catalog Number: 7049
• Author: Andrews, E. D.
• Title: Present and Potential Sediment Yields In THe Yampa River Basin, Colorado and Wyoming.
• USFW Year: 1978.
• USFW - Doc Type: \
• Copyright Material: NO

N
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Table 4.--Potentia~ sediment yields
for three eDt1:mated

from surface-mined areas in the Yampa
leveZs of coaZ production by 1990
1
4
Mod e r ~ te.r ~ rO'1,t h
pro J ed I on -

River basin

S low-g rowth
projectionl

Rapid-growth
proj ect ion 1

Square
nli j cst'

Tons
per YC<Jr3

1975-80:

Area mined-------------------------------

Area partly reclaimed--------------------
Sediment yield from surface-mined and
partly reclaimed areas-----------------

1980-85:

Area mined-------------------------------

Area panly rcclaimcd--------------------
Sedirllent yield from sudc:Jcc-mined ano
pJl"tly rccl.Jirncd dl"eaS-----------------

1985-90:
Area mined-------------------------------
Area partly reclaimed--------------------
Sediment yield from surface-mined and
partly reclaimed areas-----------------

10,000

19,009

3.4
o

7.3
3.il

.1!.

9.4
7.3

7,800

2 i ,000

30,000

lprojectcd coal production from Steele, Bauer, Wentz, and Warner (1978, tabIQ.\)I).
2AssLlIl1ing 50 acres of land are mined to produce 1 mi 11 ion tons of coal. .I~i;,'
3Scdimcnt yields have been adjusted to reflect a basin of 40 square miles.r,