FLOOD03313

• County: Denver
• Basin: South Platte
• Title: Drop Structures in the Denver Metropolitan Area
• Date: 12/1/1986
• Prepared For: UDFDC
• Prepared By: McLaughlin Water Engineers, Ltd.
• Floodplain - Doc Type: Floodplain Report/Masterplan

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EV ALUA nON OF AND DESIGN RECOMMENDA nONS FOR
DROP STRUCTURE IN THE DENVER METROPOLITAN AREA

T ABLE OF CONTENTS

Title

INTRODUCTION. . . . . . . . . . .
SCOPE OF WORK . . . . . . . . .
ADDITIONAL INVESTIGATIONS COMPLETED
Trickle Channels. . . . . . . . . . .
Hydraulic Analysis of the Drop Profiles through
The Trickle Channel and Main Drop Area
Rock Sizing Criteria .
Grouted Rock Analysis

BAFFLED APRON DROPS
INTRODUCTION. . . . .

CASES . . . . . . . . .
Case 1 - Meadowood Tributary, Aurora
Case 2 - Niver Creek at York . . . .
Case 4 - East Harvard Gulch Between
Logan and Downing ......
Case 5 - Tulsa Small Vertical Drop . .
CONCLUSIONS . . . . . . . . . . . . . .

VERTICAL DROP WITH LOOSE RIPRAP BASIN
INTRODUCTION. . . . . . . . . . . . . . .

CASES . . . . . . . . . . . . . . . . . . .
Case 29 - little Dry Creek at Krameria,
Arapahoe County . . . . . . . . . .
Case 31 - Spring Creek (tributary to little
Dry Creek) Downstream of County Line Road,
Arapahoe Count y ............
Case 33 - Sand Creek at Wheeling, Aurora
Case 60 - Bear Canyon Creek Downstream of
Gilpin, Boulder . . . . . . . . . . . . .
Case 80 - Big Dry Creek at C-470, Arapahoe
County .
CONCLUSIONS .

VERTICAL DROP WITH HARD BASIN .
INTRODUCTION. . . . . . . . . . .

CASES . . . . . . . . . . . . . . .
Case 26 - Goldsmith Gulch near Belleview
Case 27 - Mclnt yre Gulch, Center through
West Virginia Avenue, Lakewood
Case 28 - Jack Rabbit Gulch near Simms, Lakewood

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