Table of Contents - San Antonio

1 Storm Water design criteria Manual January 2016 _____ Storm Water design criteria Manual January 2016 Table of Contents | Page | i Table of Contents Table of Contents .. i .. xvii .. xx Chapter 1 INTRODUCTION .. Preface .. Acronyms And Abbreviations .. Chapter 2 DRAINAGE POLICY .. Introduction .. Statement Of Policy .. Principles .. Basic Knowledge .. Planning .. Technical criteria .. Floodplain Management .. Implementation .. References .. Chapter 3 DRAINAGE LAW .. INTRODUCTION .. FEDERAL LAWS AND REGULATIONS .. The Code of Federal Regulations .. National Flood Insurance Program.

2 National Environmental Policy Act .. Rivers And Harbors Act .. The Federal Water Pollution Control Act .. Section 402 of the CWA .. Section 404 of the CWA .. Endangered Species Act (ESA) .. STATE STATUTES AND RULES .. Texas Water Code Section .. Storm Water design criteria Manual January 2016 _____ Storm Water design criteria Manual January 2016 Table of Contents | Page | ii Texas Water Code Section .. Texas Commission on Environmental Quality Chapter 213 .. Texas Commission on Environmental Quality Chapter 299 .. LOCAL CODES/ORDINANCES/COURT ORDERS .. City of San Antonio Texas Unified Development City of San Antonio Flood Plain Ordinance 57969.

3 Bexar County Flood Damage Prevention .. Aquifer Protection Ordinance 81491 .. (Ord. No. 97568 2) Storm Water Management Plan Checklist .. (Ord. No. 2006-11-30-1333, 2, 11-30-06) Maintenance .. (Ord. No. 2009-08-20-0661, 3, 8-20-09) Amendments to Chapter 19 and 35 Ordinance No. 2010-11-18-0985 .. (Ord. No. 2013-01-31-0074) Amending FILO Ordinance of 1997 .. (Ord. No. 2014-06-19-0472) Amendments to Chapter 34 .. Chapter 4 PLANNING .. Introduction .. Regional Drainage Master Plan (Watershed Master Plan) .. Regional Storm Water Management Program (RSWMP) .. RSWMP Overview .. RSWMP Adverse Impact.

4 Fee In Lieu Of .. System criteria .. Responsibility to Accept Storm Water .. Positive Overflow Pathways .. Maintenance .. Inspection .. New Development .. Redevelopment .. Low Impact Development .. Subdivision/Development .. Storm Water design criteria Manual January 2016 _____ Storm Water design criteria Manual January 2016 Table of Contents | Page | iii Major Plat .. Minor Plat .. Replat .. Amending Plat .. Master Development Plan (MDP) .. Planned Unit Development (PUD) .. Enclave .. Master Plan Community District (MPCD) .. Master Development Pattern Plan (MDPP).

5 Inner City Reinvestment/Infill Policy (ICRIP) .. Infill Development Zone (IDZ) .. Redevelopment Projects .. Planning For The Floodplain .. Planning For Drainage Systems .. Storm Water Management Plan Checklist .. Planning For Storage .. Planning For Transportation .. Planning For Open Space .. Planning For LID .. Planning For Dams .. Maintenance Standards .. References .. Chapter 5 HYDROLOGY .. Introduction .. Method of Analysis .. Basin Delineation .. Selection of Rational or Hydrograph Method .. Selection of Method for Detention Ponds .. Rational Method .. Time of Concentration.

6 Overland Flow .. Storm Water design criteria Manual January 2016 _____ Storm Water design criteria Manual January 2016 Table of Contents | Page | iv Shallow Concentrated Flow .. Channel Flow .. Rainfall Data .. Rainfall Intensity-Duration .. Rainfall Depth-Duration-Frequency .. design Rainfall .. Areal Reduction Factor .. Runoff Coefficient .. Hydrograph Method .. Sub-Basin .. Loss Method .. SCS Curve Number Loss .. Transform SCS Unit Hydrograph .. Snyder Unit Clark Unit Hydrograph .. Baseflow Method .. Constant Monthly Baseflow .. Reach Muskingum.

7 Muskingum-Cunge 8 Point Cross Section .. Modified Puls .. Kinematic Wave .. Probable Maximum Flood .. References .. Chapter 6 PAVEMENT DRAINAGE .. Introduction .. design Guidelines .. design Frequency and Spread .. Street Classification Primary and Secondary Arterial Streets .. Storm Water design criteria Manual January 2016 _____ Storm Water design criteria Manual January 2016 Table of Contents | Page | v Street Classification Local "B" and Collector Streets .. Street Classification Local "A" Streets .. Street Classification Alleys .. Street Classification Traditional Street design .

8 Street Capacity .. High Velocity Flow .. Longitudinal Slope .. Minimum .. Maximum .. Cross Slope .. Minimum .. Maximum .. Inverted Crown .. Maximum Flow Depth .. Flow In Sag Vertical Curves .. Unflooded Public Road Access .. References .. Chapter 7 STORM DRAIN SYSTEMS .. Introduction .. Hydraulics Of Storm Drainage Systems .. Flow Type Assumptions .. Partial Flow vs. Pressure Flow .. Hydraulic Capacity .. Hydraulic Grade Line and Energy Grade Line .. Storm Dain Inlets and Outfalls .. Inlets .. Outfalls .. Energy Losses .. Pipe Friction Losses .. Exit Losses.

9 Bend Losses .. Storm Water design criteria Manual January 2016 _____ Storm Water design criteria Manual January 2016 Table of Contents | Page | vi Transition Junction Losses .. Inlet and Manhole Losses .. Missouri Charts .. FHWA Inlet and Access Hole Energy Loss .. Energy Loss Method (FHWA HEC-22, 2nd Edition) . design Guidelines .. design Frequency .. Time of Concentration and Discharge .. Velocity and Grade Considerations .. Pipe/Box Size and Placement .. Multiple Conduits Spacing and Placement .. Access Spacing .. Manholes .. Junction Boxes .. Materials and Specifications.

10 Pipe Material .. Minimum Structural Loads .. Mud Slab .. Outfalls .. Velocity Controls .. French Drains .. Maintenance Considerations .. References .. Chapter 8 INLETS .. Introduction .. Inlet Types .. Curb Inlet .. Grate Inlet .. 4- Way Inlet .. Combination Curb Inlet and Grate Inlet .. Storm Water design criteria Manual January 2016 _____ Storm Water design criteria Manual January 2016 Table of Contents | Page | vii Combination Grate and 4-Way Inlet .. Drop Curb Opening .. Sidewalk Drains .. Slotted Drain .. design Guidelines .. Curb Inlets on Grade .. Curb Inlets in sump .