Hydromodification Compliance in the Bay Area

Slides:

Advertisements

Similar presentations

Item #6b 1 Towards a Bay Area Watershed Model Presented to the SPLWG May 14, 2008 John Oram & Lester McKee.

Advertisements

Clean Water Its Everybodys Business. From a distance we might get the impression that our planet has an unlimited supply of clean water available to use.

Western Washington Hydrology Model Version 3 AWRA Washington Section January 2007 Doug Beyerlein, P.E. Clear Creek Solutions, Inc.

Infiltration Trenches Dave Briglio, P.E. MACTEC Mike Novotney Center for Watershed Protection.

South Llano River: One of 2011’sTop Ten National Fish Habitat Action Plan named SLR as “water to watch” WHY?? –Conserve freshwater, estuarine, and marine.

UW LID Workshop Permeable Pavement Modeling June 2008 Doug Beyerlein, P.E. Clear Creek Solutions, Inc.

Using HEC-1 for Subdivision Runoff Detention Pond Design Stacie Kato April 26, 2004.

Leah Johanson, Water Environment Services

INLAND EMPIRE ASCE & APWA LOW IMPACT DEVELOPMENT (LID) SEMINAR INLAND EMPIRE ASCE & APWA LOW IMPACT DEVELOPMENT (LID) SEMINAR LID FACILITY DESIGN Prepared.

CHARACTERISTICS OF RUNOFF

Low Impact Development Overview  Alternative to end of pipe approach to SWM  Maintain hydrologic function of local ecosystem  Treat stormwater close.

Low Impact Development for Stormwater Treatment and Hydrograph Modification Management in California Dan Cloak, Principal Dan Cloak Environmental Consulting.

Storm Water Management and Erosion/Sediment Control Storm water management reduces quantity, and improves quality, of runoff in the watershed Site based.

Western Washington Hydrology Model Version 3 Vancouver, WA, Workshop October 17, 2007 PM.

Ch  Know what design frequency means  Know how to delineate a drainage area on a topographic map 2.

1 Quantifying Hydromodification Impacts and Developing Mitigation Using a Four Factor Approach Judd Goodman CASQA Conference November.

Wes Marshall, P.E. University of Connecticut May 2007 CE 276 Site Design Final Exam Outline.

HYDROLOGIC COMPUTER MODELING Washington Hydrology Society March 2006 Joe Brascher, President Clear Creek Solutions, Inc.

Hydrologic Cycle and Watersheds. Hydrologic Cycle Components Precipitation Infiltration Percolation Runoff Evapotranspiration.

SDHM Hydromodification Overview

Western Washington Hydrology Model Version 3

LCRA Highland Lakes Watershed Ordinance

Stormwater Infrastructure for Water Quality Management Dr. Larry A. Roesner, P.E. CE 394K.2 Surface Water Hydrology University of Texas, Austin April 8,

Fresh Water Systems Parkside Junior High 2010/11 Mrs. Doig-Gray and Mrs. Friesen.

Overview of Watershed Systems

Flood maps – Modeling a levee break

Horsley Witten Group, Inc. Rhode Island Stormwater Design and Installation Standards Manual Public Workshop Design Elements for BMPs January 19, 2011.

WATERSHED MODELING IN SOUTHERN CALIFORNIA

HYDROMODIFICATION: AN INTRODUCTION AND OVERVIEW Presented by Jeffrey Haltiner, Ph.D., P.E. Philip Williams & Associates, Ltd. San Francisco, CA May2006.

Clear Creek Solutions, Inc. Providing software and consulting services to solve hydrology and stormwater problems throughout the world.

Sanitary Engineering Lecture 11. Storm Water Runoff Storm water runoff is the precipitation which seeps into the ground if precipitation occurs faster.

LINKING LAND USE DECISION WITH STREAM FLOW AND AQUATIC BIOLOGY MANAGEMENT By Jim MacBroom CACIWC Annual Meeting October 2001.

New Stormwater Regulations “C.3” Provisions in effect Feb. 15, 2005.

Bay Area Hydrology Model Doug Beyerlein, P.E. Joe Brascher Shanon White Clear Creek Solutions, Inc.

Stormwater 101 Ohio Lake Erie Commission Best Local Land Use Practices Kirby Date, AICP.

ODOT 2015 Geo-Environmental Conference

Stormwater Treatment and Flow Control Dan Cloak, P.E. Presentation to the San Diego Region Co-permittees Hydromodification Workgroup December 6, 2006 Contra.

MRP Steering Committee Meeting April 24, 2006 New and Redevelopment Performance Standards Sue Ma S.F. Bay Regional Water Quality Control Board.

Why are we here today? To discuss the challenges we face in meeting NPDES Phase II minimum requirements for stormwater control. The NPDES program requires.

Stormwater Treatment and Flow Control Dan Cloak Presentation to the Citizens Advisory Committee November 13, 2006 Options for implementing new Phase II.

Hydrograph Modification Management in Contra Costa County Dan Cloak, P.E. Dan Cloak Environmental Consulting.

Term Project Presentation CE 394K.2 Hydrology Presented by Chelsea Cohen Thursday, April 24, 2008.

Regulatory Refresher What Construction Site Inspectors Need to Know about the MRP Kristin Kerr, P.E., QSD EOA, Inc. Construction Inspection Workshop April.

Stormwater and C.3 Overview Tom Dalziel, Assistant Manager Contra Costa Clean Water Program.

Low Impact Development for Compliance with NPDES Treatment and Hydrograph Modification Management Requirements in Contra Costa County Tom Dalziel, Assistant.

Countywide Model SUSMP July 17, Topics SUSMP Timeline Goals Approach to Compliance NPDES Permit Requirements NPDES Permit Requirements Model SUSMP.

HFR Method for Large Storm Events Katie Rose Surface Water Term Project.

Western Washington Hydrology Model 2005 AWRA Annual Conference Doug Beyerlein, P.E. Joe Brascher Shanon White Clear Creek Solutions, Inc.

Addressing the Sediment Problem in Sonoma Creek Watershed Rebecca Lawton 1, Deanne DiPietro 1, Laurel Collins 2, Arthur Dawson 1 1 Sonoma Ecology Center,

STORMWATER MANAGEMENT

State Board Modeling Needs and Interests Eric Berntsen, PH, CPESC, CPSWQ State Water Resources Control Board CWEMF Hydrology and Watershed Modeling Workshop.

Sizing Stormwater Control Facilities to Address Stream-Bank Erosion Control Anthony M. Dubin, PE Brown and Caldwell Anthony M. Dubin,

Description of WMS Watershed Modeling System. What Model Does Integrates GIS and hydrologic models Uses digital terrain data to define watershed and sub.

Surface Water Surface runoff - Precipitation or snowmelt which moves across the land surface ultimately channelizing into streams or rivers or discharging.

Rodrigo Concha Jopia FLUMEN Research Group Technical University of Catalonia Barcelona TECH.

CE 3372 Water Systems Design

Basic Hydrology & Hydraulics: DES 601

Clear Creek Solutions, Inc. LID Hydrology and Hydraulics Doug Beyerlein, P.E. Clear Creek Solutions, Inc.

Christie Beeman, Andrew Collison, and Mike Liquori Philip Williams & Associates Options for Flow-Control Compliance.

WWHM3 LID Stormwater Modeling Snohomish County August 2006 Doug Beyerlein, P.E. Clear Creek Solutions, Inc.

Gar Creek in Huntersville LID Requirements in Mecklenburg County What Is The Goal? Why Is It Necessary? Where Is It Required? How Does It Work?

Storm Water Storage and Treatment

by John Anderson, Martin Bermudez, and Megan Jordan

Water Resources Engineering Hydrological Analysis and Simulation Model HEC-HMS Prof. Ke-Sheng Cheng Department of Bioenvironmental Systems Engineering.

Surface Runoff and Hydrograph Components

Applied Hydrology Hydrological Analysis and Simulation Model HEC-HMS

Northern California LID Hydrology and Hydraulics

Kickoff example Create a new file

Doug Beyerlein, P.E., Clear Creek Solutions, Inc.

What we have developed is…

Presentation transcript:

Hydromodification Compliance in the Bay Area Presented by Norman Gonsalves Caltrans District 4 July 2010

What is HYDROMODIFICATION? The alteration of natural stream hydrology by human activity.

Why could HM be a problem? Stream bank and stream bed erosion Sedimentation Increased pollutant delivery to receiving waters Decreased salinity in estuaries and coastal areas

Stream bank erosion

Stream bed erosion

Sedimentation

Flooding (sedimentation)

What causes HM? Increased runoff volume from upland areas Channel lining and armoring Channel entrainment and straightening Flow impounding

Increased runoff volume

Channel lining

Channel armoring

Channel entrainment (levee)

Who considers HM a problem? The USEPA, but leaves regulation to states. States include Washington, California, others. California counties regulating HM include: Alameda (west) Contra Costa (all) Santa Clara (west) San Mateo (all) San Diego (all) Los Angeles (all)

What are the requirements? For areas with HM regulations: Do not exceed pre-project flow peak flows Do no exceed pre-project flow durations, from 0.1*Q2 to Q10 Applies to projects discharging to susceptible receiving waters Applies to projects with 1 acre or more of added impervious surfaces Applies to Caltrans projects requiring 401 Certification

Flow-duration curves

Susceptible receiving waters Water bodies that are NOT susceptible include: Bays, oceans, large lakes and reservoirs; Tidal reaches; Channels lined, armored or piped for their entire lengths all the way to (1) or (2) above; Aggrading channels

Exempted projects Projects with less than 1 acre of added impervious area Projects discharging to non-susceptible water bodies Infill projects (> 65% impervious area) in highly developed watersheds (< 10% vacant parcels)

Example of exempt areas Susceptibility map.

Basic ways to meet HM requirement Infiltrate excess volume created by added impervious areas Discharge excess volume below erosive flow rates of receiving waters (0.1Q2 pre-project), using storage structures

Storage structures for HM management Storage structures, including: Basins (lined or unlined), Underground storage pipes, Ditches (lined or unlined), Sand filters, Bio-retention systems

Infiltration devices for HM management Infiltration basins, Infiltration trenches, Bio-retention systems, Unlined detention basins, Unlined ditches, Biostrips, Embankment side slopes, Other pervious surfaces

Design tools for HM management Bay Area Hydrology Model (BAHM) (proprietary, but free version available) Hydrological Simulation Program – Fortran (HSPF) (EPA, free) Storm Water Management Model (SWMM) (EPA, free)

Tools compared HSPF – powerful but hard to use. No built-in data. BAHM – based on HSPF, user-friendly, set up specifically for HM, built-in data for 4 Bay Area counties, but unstable and buggy. SWMM – can calculate HM devices as part of entire drainage system, fairly user-friendly, no built-in data, less capable infiltration model.

BAHM – Select Project Site

BAHM – Add A Watershed

BAHM – Add A Detention Pond

BAHM – Review Results

BAHM – Produce Report

BAHM – Pond Elements

BAHM Tank and Channel Elements

BAHM – More Devices

BAHM – Outlet Structures

SWMM – User interface

SWMM – LID + Drainage Calcs

SWMM – Drainage Profile