City of Austin Phase 1 Ordinance (WPO) Overview · City of Austin Phase 1 Watershed Protection...
Transcript of City of Austin Phase 1 Ordinance (WPO) Overview · City of Austin Phase 1 Watershed Protection...
City of AustinPhase 1
Watershed Protection Ordinance (WPO)Overview
Environmental BoardJune 19, 2013
City of AustinPhase 1
Watershed Protection Ordinance (WPO)Overview
Environmental BoardJune 19, 2013
Presentation Overview
• Austin’s Creeks & Watershed Concerns
• Council Directive for WPO
• WPO Highlights
• Coordination with Imagine Austin
• Schedule/Next Steps
• Questions
WPO = Watershed Protection Ordinance
BartonSpringsZone
BartonSpringsZone
WaterSupply
Suburban
WaterSupply
SuburbanWaterSupplyRural
WaterSupplyRural
UrbanUrban
SuburbanSuburban
WatershedClassificationsWatershedClassifications54% of Austin’s jurisdiction in Suburban Watersheds
54% of Austin’s jurisdiction in Suburban Watersheds
UndevelopedLandUndevelopedLand
BartonSpringsZone
BartonSpringsZone
WaterSupply
Suburban
WaterSupply
SuburbanWaterSupplyRural
WaterSupplyRural
UrbanUrban
SuburbanSuburban
“Suburban” has 78% of Austin’s undeveloped land
“Suburban” has 78% of Austin’s undeveloped land
Land in FloodplainLand in Floodplain
BartonSpringsZone9%
BartonSpringsZone9%
WaterSupply
Suburban4%
WaterSupply
Suburban4%
WaterSupplyRural5%
WaterSupplyRural5% Urban
6%Urban6%
Suburban16%
Suburban16%
Nearly 1 in 6 “Suburban” acres reside in 100‐year floodplain
Nearly 1 in 6 “Suburban” acres reside in 100‐year floodplain
BartonSpringsZone
BartonSpringsZone
WaterSupply
Suburban
WaterSupply
SuburbanWaterSupplyRural
WaterSupplyRural
UrbanUrban
SuburbanSuburban
Highly ErodibleSoilsHighly ErodibleSoils“Suburban” area has extensive areas of highly erodible soils
“Suburban” area has extensive areas of highly erodible soils
Turkey Creek (WS Rural)Turkey Creek (WS Rural) Barton Creek (BSZ)Barton Creek (BSZ)
EdwardsPlateauStreams
EdwardsPlateauStreams
Walnut Creek (Suburban)Walnut Creek (Suburban) Bull Creek (WS Suburban)Bull Creek (WS Suburban)
Blackland PrairieStreamsBlackland PrairieStreams
Gilleland Trib (Suburban)Gilleland Trib (Suburban) Cedar Creek (Suburban)Cedar Creek (Suburban)
Wilbarger Trib (Suburban)Wilbarger Trib (Suburban) Wilbarger Main (Suburban)Wilbarger Main (Suburban)
Headwaters Creeks in Austin’s Eastern EdgeHeadwaters Creeks in Austin’s Eastern Edge
Headwaters Creeks in Austin’s Eastern EdgeHeadwaters Creeks in Austin’s Eastern Edge
Boggy CreekBoggy Creek
Wastewater Collection System ProblemsWastewater Collection System Problems
Urbanization: Channel Erosion & RepairUrbanization: Channel Erosion & Repair
BeforeBefore After (at ~$1,000/lin.ft.)After (at ~$1,000/lin.ft.)
BeforeBefore After (at ~$1,000/lin.ft.)After (at ~$1,000/lin.ft.)
Key Themes Inspiring Council Action
• Importance of protecting riparian areas & floodplains
• Lessons learned in Austin & beyond: need best science
• Prevention is affordable; repairs are not
• Simplicity and complexity
• A sustainable future: green infrastructure; compact development; connectivity; health; water
• Balance environmental protection & development opportunity
Council Resolution
1. Creek Protection
2. Floodplain Protection
3. Development Patterns & Greenways
4. Improved Stormwater Controls
5. Mitigation Options
6. Simplify Regulations & Maintain Opportunity
7. Coordinate with Regional Partners
(Resolution #20110113‐038)
"Improve stream buffer requirements, including critical headwater areas, to protect water quality and reduce erosion, flooding, and long‐range costs for infrastructure maintenance."
Creek Protectio
n
Current System - SuburbanMajor > 1,280 acresIntermediate 640 – 1,280 acresMinor 320 – 640 acres
45
Proposed SystemMajor 640 – 1,280 acresIntermediate 320 – 640 acresMinor 64 – 320 acres
45
100 50 0 ft
Proposed BuffersProposed Buffers