WSP06378

• File Number: 8220.200.05.P
• Description: Hoover Dam/Lake Mead/Boulder Canyon Project
• Basin: Colorado Mainstem
• Date: 5/2/1979
• Author: USACOE
• Title: Transcript of a Public Hearing for Re-evaluation of A Flood Control Operation Plan for Hoover Dam: Parker AZ
• Water Supply Pro - Doc Type: Report/Study

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46

MR. J3RANTINGHAH: Right, but it's possible to

let more water through. Is it possible for more cfs to go

through Headgate?

MR. GAm~ER: Oh, sure. The gates operate

automatically. If the flow's a hundred thousand (lOO,OOO)

cfs they're wide open.

.
If it's two thousand (2,000) cfs you

only get one gate open two (2) inches.

HR. J3RN~TINGHAH: Okay, so we have a stop

there ",hich we've already reached, is that what you're saying?

l1R. GARNER: It stays at the top. All the

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water that's released additionally out of Parker Dam goes

right through Lake Piballia and right through lIeadgate Rock.

We don't store a drop in Lake Piballia. It's essentially a

dead pool of water.

HR. BRANTINGHAH: Okay, well I'm trying to

understand why the water would back up. You know, it's

MR. GARNER: The water does not back up.

~ffi. FREENY: What we're getting here is a

velocity profile.

MR. BRANTINGHAM: Okay.

HR. FREENY: And the further into the pool

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you get the more effect the pool has, so that by the time you

get all the way down to Headgate Rock you have no differentia .

It doesn't matter what the flow is. As you go back upstream

you pick up additional portions of that velocity profile, so