FLOOD00230

• Designation Number: 121
• County: Adams
• County: Arapahoe
• County: Douglas
• Community: Denver Metro Region
• Stream Name: Massey Draw and North Tributary
• Title: FHAD - Massey Draw and North Tributary, SJCD South 6200 and Tributaries, Jefferson and Arapahoe Counties, CO
• Date: 5/1/1978
• Designation Date: 11/1/1978
• Floodplain - Doc Type: Floodplain Report/Masterplan

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CONTENTS

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I

INTRODUCTION

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Authorization

Purpose & Scope
Information Collected

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II

BASIN DESCRIPTIONS
Flood History

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Massey Draw

North Tributary of Massey Draw

SJCD (South) - Basin 6200

Basin Development

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III
IV

HYDROLOGIC ANALYSIS
HYDRAULIC ANALYSIS

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Flood Hazard Area Description

Floodway
Sunnnary

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LIST OF FIGURES

Page
1
1
1
2
2
2
2
2
3
3
3
15
16
19
19

111-1 Flood Hydrographs, SJCD (South) 620Q at Nevada Ditch

111-2 Flood Hydrographs, SJCD (South) 6200 Including Trib. #1

111-3 Flood Hydrographs, SJCD (South) 620Q Including Trib. #2

111-4 Flood Hydrographs, N. Tributary of Massey Draw at S.

Wadsworth Blvd.

111-5 Flood Hydrographs, N. Tributary of Massey Draw at S.
Garrison St.

111-6 Flood Hydrographs, Massey Draw at S. Wadsworth Blvd.

111-7 Flood Hydrographs, Massey Draw at S. Garrison St.

111-8 Discharge-Probability Profiles for Massey Draw

111-9 Discharge-Probability Profiles for North Tributary of
Massey Draw

111-10 Discharge-probability Profiles for SJCD (South) -
Basin 6200

III-II Discharge-Probability Profiles for SJCD (South)
Tributary No. 1

111-12 Discharge-probability Profiles for SJCD (South)
Tributary No. 2

V

DRAWINGS

following 25

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LIST OF TABLES

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I-I Information Collected

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111-1 Hydrograph Input Sunnnary, Developed Condition
111-2 Design Rainfall for T5S, R69W
111-3 Design Rainfall for T5S, R70W
111-4 Design Rainfall for T6S, R69W
111-5 Peak Discharge Sunnnary
111-6 Flood Volume Sunnnary
IV-l Flood Hazard Information for Massey Draw
IV-2 Flood Hazard Information for North Tributary of Massey
Draw

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IV-3 Flood Hazard Information for Tributary No. 2 SJCD
(South) - Basin 6200

IV-4 Flood Hazard Information for Tributary No. 1 SJCD
(South) - Basin 6200

IV-5 Flood Hazard Information for SJCD (South) - Basin 6200

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LIST OF DRAWINGS

2
4
5
5
6
6
7
20
21

Drawing
No.

Sheet
No.

Title

1
2

Plate I Location and Basin Maps
Plate II 100-Year Flood Hazard Area and Index Map

MASSEY DRAW

22

3
4
5
6
7
8
9
10

8
7
6
5
4
3
2
1

Plan and Profile

Plan and Profile

Plan and Profile

Plan and Profile

Plan and Profile

Plan and Profile

Plan and Profile

Plan and Profile

23

24

NORTH TRIBUTARY MASSEY DRAW

11
12
13

5
4
3

Plan and Profile
Plan and Profile
Plan and Profile

~

Leonard Rice Consulting Water Engineers, Inc.

Page
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14

Station

210+00 to 241+00
180+00 to 210+00
150+00 to 180+00
120+00 to 150+00
90+00 to 120+00
60+00 to 90+00
30+00 to 60+00
0+00 to 30+00

120+00 to 127+45
90+00 to 120+00
60+00 to 90+00