BOARD01663

• Board Meeting Date: 8/6/1969
• Description: Agenda or Table of Contents, Minutes, Memos
• Board Meetings - Doc Type: Meeting

I will be glad to answer any questions
anyone might have concerning our program
at the present time."

MR. STAPLETON:

"Thank you. How about questions on
this report? Quincy."

I

MR. CORNELIUS:

"John, this spillway on Cherry Creek
Dam, as I understand it, you are going to
raise the spillway to nearly double the
flood control capacity without increased
recreation storage. Would you like to
comment on that?"

MR. VELEHRADSKY:

"Yes. The Cherry Creek spillway
would control at the present time a
standard project flood. HOwever, if a
standard project flood were to occur and
then another flood were to occur on top
of that, then it would discharge into the
Sand Creek basin. Normally our dams are
designed to provide a certain flood con-
..1:;rol pool plus a surcharge pool for what
we call a spillway design flood or a
probable maximum flood. The Cherry Creek
project does not meet this criteria. It
would control the standard project flood.
Anything above that would go into the
Sand Creek basin.

I

So what we are proposing to do is to
literally cut the Cherry Creek basin off
from the Sand Creek basin. The Cherry
Creek project could do this but we would
have to acquire additional lands around
the reservoir. At the present time the
government ownership is about 5625 and
the top of the dam is 5645 so there is
20 feet vertically that is not owned by
the federal government at the present time.
We made studies to determine if it would
be better to raise the spillway up to 5640
or move up to Castlewood and it appears at
the present time that it would be better
to go to Castlewood with this storage."