CITY WIDE MASTER DRAINAG,E PLAN

CITY WIDE MASTER DRAINAG,E PLAN

CITY OF SARASOTA

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""'""'"""-'""""""' ENGINEERING ? PLANNING ? ARCHITECTURE ? LANDSCAPE ARCHITECTURE

I ,

CITYWIDE DRAINAGE MASTER PLAN For

CITY OF SARASOTA

September, 1987

Prepared by :

POST, BUCKLEY, SCHUH & JERNIGAN, INC.

Urban Water Resource Division 5300 West Cypress Street, Suite 300

Tampa, Florida 33607

Table of Contents

Citywide Drainage Master Plan For

City of Sarasota

SECTION

TITLE

PAGE

1.0

Introduction

1. 1 Background

1-1

1.2 Purpose and Scope

1-2

1.3 Project Authorization

1-3

2.0

Background and Data Collection

2.1 Introduction

2-1

2.2 Published Data

2-1

2.2.1 Precipitation and Temperature

2-1

2.2.2 Groundwater and Surface Water

2-3

2.2.3 Topographic Mapping

2-4

2.2.4 Aerial Photography

2-5

2.2.5 Land Use Data

2-5

?2.2.6 Soils Mapping

2-7

2.3 City Working Documents

2-7

2.3.1 Engineering Department

2-7

2.3.2 Planning Department

2-8

2.4 Previous Plans and Studies

2-9

2.5 Current City Development Projects

2-10

2.6 Stormwater Regulations

2-12

3.0

Drainage System Inventory

3.1 General

3-1

3.2 Atlas Update

3-1

3.3 Future Updating and Improvements

3-2

4.0

Land Use Assessment

4.1 General

4-1

4.2 Existing Land Use

4-1

4.3 Future Land Use

4-2

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Table of Contents (Continued)

SECTION 5.0 6.0

7.0

8.0

TITLE

PAGE

Development of Design Storm

5.1 General

5-1

5. 2 Rain fa 11 Frequency

5-2

5.3 Rainfall Duration

5-5

5.4 Rainfall Volume

5-6

5.5 Rainfall Distribution

5-7

Basin Characterization and Problem Identification

6.1 Basin Delineation

6-1

6.2 Problem Identification

6-3

6.3 Coastal Basins

6-7

6.3.1 North Trail Coastal Basin

6-9

6.3.2 Bayfront Coastal Basin

6-14

6.3.3 Osprey Coastal Basin

6-18

6.4 Inland Basins

6-23

6.4.1 Whitaker Bayou Basin

6-24

6.4.2 Business District Basin

6-30

6.4.3 Hudson Bayou Basin

6-31

6.4.4 Phillippi Creek Basin

6-42

Stormwater Service Level

7.1 General

7-1

7.2 Service Level Definitions

7-1

7.3 Capacity and Demand Calculations

7-3

7.3.1 Facility Capacity Analysis

7-4

7.3.2 Facility Demand and Residual

Capacity Analysis

7-9

7.4 Service Level Attainment

7-10

7.5 Analysis of Basin Performance

7-20

Funding Needs and Implementation Program

8.1 General

8-1

8.2 Capital Needs Assessment

8-1

8.3 O&M Needs Assessment

3-6

8.4 Implementation Program

8-9

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Table of Contents (Continued)

SECTION

TITLE

PAGE

8.4.1 Capital Expenditures

8-9

8.4.2 Strategic Basin Studies Strategy

8-10

8.4.3 O&M Strategy

8-11

8.4.4 Implementation Plan

8-12

8.5 Program Financing

8-13

8.5.1 The Stormwater Utility

8-18

8.5.2 Bonding

8-23

8.5.3 Summary

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