FLOOD04144

• County: Statewide
• Community: Adams/Arapahoe/Denver/Broomfield/Douglas/Jeffco
• Basin: Statewide
• Title: Urban Storm Drainage, Criteria Manual Volume 1
• Date: 6/1/2001
• Prepared By: Wright Water Engineers, Inc.
• Floodplain - Doc Type: Educational/Technical/Reference Information

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DRAINAGE CRITERIA MANUAL (V. 1)

TABLE OF CONTENTS

5,3_1 Accuracy..... ..... ....., __. _'...,....... ....,.....,........... ........,....... ...... ....... ................ ..... DP-20
Streets.........,.....,....,. _..., __........,...,....... ....,............................. ..... ........... .__........ ...., ...... DP-20
5.4.1 Use of Streets ,.............,........................,......,......................,...__..................... DP-20
Irrigation Ditches...,. ....,.....,....,...,...._., _.............. ...... .......... ..._'......... ....,........... ............ DP-22
5_5.1 Use of Ditches.....,..........._...,............,........................,.........................'....,..... DP-22
5_5.2 Ditch Perpetuation,....,..................... .... .....,.... ...................,.... ......, .... .............. DP-23
5.5.3 Conformance With Master Plan ..................,................................................., DP-23
Detention and Retention Facilities Maintenance ,....,..................................................DP-23
5,6,1 Water Quality .....,....,.........,.............................................'.............................. DP-23

6.0 FLOODPLAIN MANAGEMENT..,....,....................., .......... .................. ..,......... ......................... DP-24

6,1 Purpose...,......,.... ....., ..........,...............,............. ....... .................... .... ....... .................... DP-24
6,2 Goals.. ....., .....,..... .........................,. ...... ..... ................ ..,....... ......... ...., ................ .......... DP-24
6,3 National Flood Insurance Program ............................,....,........................................... DP-24
6.3.1 Participation ...............................,...............,................,........,......................... DP-24
6.4 Floodplain Management.............,...........,. ......... ...... ..... .... ..,...........,... ..,..., ..... .... ........ DP-25
6.5 Floodplain Filling .....,..........,........,..............................................,........,....................... DP-25
6.6 New Development... ...... ............... ...... ...._.......... .....,.... .......... ................ ........ ..,.... ....... DP-25
6.7 Strategies and Tools ..............................,.............,.............,........................................ DP-26
6,7.1 Exposure to Floods ......,..................................................................,........,...., DP-26
6.7.2 Development Policies............ ........... ............. .............. ............ .... ..... ...... .....,.. DP-26
6.7.3 Preparedness......,...................., .... ...... .....,.... ......................... ....,. .................. DP-26
6.7.4 Flood Proofing....................,.....,.... ..,......... ......... .......,.. .......... ..._,.... ..... ..,....... DP-26
6.7.5 Flood Forecasting ..............................................,........................................... DP-26
6.7.6 Flood Modification. .... .......... ........... .........,........... .............. ........ ...... ...... ......... DP-26
6.7.7 Impact of Modification .......................................,................................,.......,...DP-26

5.4

5,5

5.6

7,0

IMPLEMENTATION ...... ........., ...... ...., .... ...... ._,........ .........,.....,.................. ..,.. ........... ...... .... ..,.. DP-27
7.1 Adoption of Drainage Master Plans .......................................................,..,................. DP-27
7,1.1 Manual Potential ..................,...................................'..................................... DP-27
7.2 Governmental Operations ..., ....,..... .__.................. .........., .................. ..,............. ........_.. DP-27

7.3 Amendments.,..... ....... _........,....,...,.....,................ ...... ..,...... .......... .... ...........,.........,..... DP-27
7.4 Financing........,........,.....,.....,....,...,..................... ....... ..... ...., ......... .... .....,........... ........., DP-27
7.4.1 Drainage Costs ,.........................................,...............,................................._. DP-27

8.0 REFERENCES..... ........... ....,. .........., ....,..., __...,............... ....... ...., .................. .....,.........,. .... ..... _. DP-28

Drainage Law

1,0 SUMMARY OF CURRENT GENERAL PRINCIPLES OF DRAINAGE AND
FLOOD CONTROL LAW ..,._,...._...,_...,.........,....,............................,......,.................................... DL-1

1.1 Introduction ,....., ,...,.....,.....,...................,.................,......................,......,....................... DL-1
1.2 Legal Principles ..,...,.....,.....,....,..,....,.___.,....,.....................,.....,........,....,........................ DL-2
.GENERAL PRINCIPLES OF DRAINAGE LAW....................,.................................,....,............. DL-5
2.1. Private Liability ..,.........,.....,.............,..........,..........,...............,..................._............., ,.... DL-5
2,1.1 Common Enemy Rule .................._....................................___....,_............,......... DL-5
2,1.2 Civil Law Rule ........................._.__................,.......................__........................... DL-5
2,1.3 Reasonable Use Rule ...............................................,...................................... DL-5
2.2 Municipal Liability .............., ,...,.........,....................,...............,..,............_...........,........... DL-6
2,2.1 Planning Drainage Improvements......,.....,....,......_....,...........,.....................__... DL-7
2,2.2 Construction, Maintenance, and Repair of Drainage

Improvements, _.. _, _.. _,.............., ..... ,....,...... .............. ..,.. .... ..,.., ...... .... ......... ._..... DL-8
2,2_3 Summary _, _ __._......,....,........,...... ....,..........,..._., _ __.,......,.. ........., ...... ............_....... DL-9
2.3 Municipal Liability for Acts of Others............................_.....,............................_..__..,.... DL-10

2,0

6/2001
Urban Drainage and Flood Control District

TOC-iii