PERMFILE122701

• Permit No: C1981010
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: POSTMINING LAND USE
• Section_Exhibit Name: APPENDIX O
• Media Type: D
• Archive: No

• POND (N0.)
Definition
•

A eater impoundment made by con-
structing a dam or an embankment or
by excavating a pit or dugout.
In this standard, ponds Constructed
by the first method are referred to
as embankment ponds and those con-
structed by .the second method as
excavated ponds. Ponds constructed
by both the excavation and the em-
bankment methods are classified as
embankment ponds if the depth of
eater impoundment against the embank-
ment at spillway elevation is 3 feet
or ire.
Puzpose
To provide water for livestock, fish
and wildlife, recreation, fire con-
trol, crop and orchard spraying, and
other related uses.
Scope
This standard establishes the minimum
acceptable quality for the design and
construction of ponds if:
1. Failure of the dam will not
result in loss of life; in damage to
home, commercial or industrial build-
ings, main highways, or railroads; or
in interruption of the use or service
of public utilities.
2. The product of the storage times
the effective height of the dam is
less than 3,000. Storage ie the
volume, in acre-feet, Sn the reser-
voir below the elevation of the treat
of the emergency spillway. The
effective height of the dam is the
difference in elevation, in feet,
between the emergency spillway crest
Pond 378-1
Technical Guide
Section IV
Statewide
and the lowest point in the cross
section taken along the centerline of
the dam." If there 1s no emergency
spillway, the top of the dam Ss the
upper limit.
3. The effective height of the dam
is 35 feet or less, and' the dam Ss
hazard CLs 66 (8 ).
Conditions where practice applies
General. The requirements of the
State Engineez of Colorado as they
apply to dams and reservoirs shall be
met.
This practice applies to all dams
within criteria established under
'Scope" to be constructed for conser-
vation purposes, Sncluding Livestock
Water Tanks and Erosion Control Dams
as defined by Colorado statutes.
Livestock Water. This practice
applies only where it is determined
that additional eater supply for
livestock on the farm is justified.
Reasonably dependable livestock water
in a pasture bounded by fences or a
natural livestock barrier generally
should not be located closer together
than a travel distance of:
1. One-quarter to one-half mile in
rough mountain land;
2. Three-eighths to three-fourths
mile in foothills or rolling land;
or
3. Three-quarters to one mile in
undulating prairie land.
Slie conditions. Site conditions
shall be of such that runoff from the
design storm (see Table 3) can be
safely passed through (i) a natural
SCS, Colorado, April 1980