Loading...
2. EPA_WPP_Flood_Hazard_Mitigation - David Hunter City of Denton Watershed Protection Water Quality/Quantity Planning Efforts Denton • DFW Metroplex • Population N140,000 Anwha, Ask • Two Major Universities • Known for Jazz Music Program • Progressive community • Located in the Trinity River Watershed • Elm Fork of the Trinity Sub- Basin i Denton 's '* Watershed . . . Creez • The City's watershed is a 3 ' - combination of four sub- basins that area part of the greater Trinity River Watershed. PRO �.��r�t ,�rA�� ��%w�1� !� *ate���� �►'��s AO ♦il'�.�w��� �Ilfiltt�� � ��1�-�N.4iSTL��h:---ram�� City of Denton has water rights in Lewisville and Ray Roberts Lake along with the City of Dallas. #V . The ChaIlle e • Increased growth in the metroplex • Stresses on environmental resources • Increased flood risk • Shrinking/changing economic/financial resources • Increased need for local/regional collaboration Hickory Cree nalysis : Land Use Cl., h ges Water Water 2008 1 2012 Urban Agricultural` Agriculture},, 24% 31% Urban 27% 3 Y,"O f' Fores Range Forest . °�0 37% Range 7% . 31% - - -- Water - - Water 2017 1 2020 Agricultural., AgriCLlltur 22% 20/o Urban Forest 46°") Urban 5% Forest 51% r 5% i Range ', Range 26% 23% ii Look'ing 91 fui t e Over 1 million expected in Denton County by 2030 . Protection of natural assets for • • growth an • quality of life City of Denton expected to Double by 2040 . fir• -� -j h II nof floCae es • Increased impervious pavement • Greater intensity and frequency of flood events (crosses political boundaries) • Communication between City of Denton departments - Stormwater Management/Water Resources - Public Works -Urban Planning - Parks Department Or •,,, - Emergency Management I * April 24, 2007 Storm event i Construction Site- 1-5 acres • • >5 acres Continued Growth — Denton/Denton _ County J w _1 �_ � -N�� � • � J1teS Giot`►E�:, �'�ng r�ih�c s City of Denton Water Quali onitoring Program 84 sites sampled monthly �' l� _ i; 18 Years of data ME 1 � 1 1 r H N h- if./ - r, CODGIS-GISADMScreeningStations CODGIS.GISADM.Regulatory SDE.CountyRoads CLASS SIDE Streams DIVISION ONE - ■ DIVISION • • Clear Creek Reference Ste - . arl t A.. . .a t,.,r n•iinS�j(n .,, •�I_r^ — n _ - Cooper CreekatNTrinity 06 \ ` �f' Pecan Creek upstream of _ PCWRP discharge - Pecan Creek downstream of - i r PCWRP discharge(EMPACT grant) Hickory Creek at lift station near a Old Alton 't - Lewisville Lake platrorm - - � -• - - ^' •* near intake Hickory Creek Watershe rotection Plan I r ( Project : 2005-2008i/12 09-2013 ) • Modeled water quality impacts from development • Constructed : : ( Economic Modelling) • Established strong stakeholder relationships ' irl �. .e�.t °•. re.s r..roen�.rr.�� � � I MfM4Y/M wrt� 'p• ' ....��...��.per•.wr- 1" �voss►wGs p•• •' . Phosphorous tonslyr •. ' • 0 00898= 0 050000 •t • 0 OS0001 0 060000 _ O ••1 •• • • ' • Denton County ••• • Bridge Facility 319 Grant W Data Allow • evaluate water quality changesHickory Creek at Country Club Road respect to different Total Phosphorus (TP) storm events Load Duration Curve (n=46) High Flows Screening Level = 0.69mg/L Moist Conditions Updated 12/02/2018 Mid-Range Conditions 100000 Dry Conditions Low Flows 10000 Screening Level-TP ■ 1000 ■- LOADEST-TP Y 100 O — J > 10 — O CL O I1;1 s 0.1 0 � 0.01 0.001 0.0001 0 10 20 30 40 50 60 70 80 90 100 Percentage of Days Load Exceeded Denton County za 'tigation Plan (20 • Collaborative Regional Effort Coordinated by North Central Texas Council of Governments • Identifies various Risk and Vulnerabilities • Results of this effort to be incorporated into the City of Denton's Hazard Mitigation Plan • Reimbursable by FEMA funds • Create opportunities to increase resilience Hazard Mitigation Action Plan Denton County.Texas ni ADenton County Gr belt flan Adopted by Dento County 2017/COD 2019) • Preserve greenbelts and related natural areas • Identify strategic areas for greenbelt �y T - corridors • Advocate for multi- � use greenbelts • Provides a strategy �' J "tool box" � '� CitY of Denton Strat is Elements • Complete and Approved Watershed Protection Plan ( No stream-impairment) • Complete and Approved Hazard Mitigation Plan (integrated with Denton County) • Partnership with Upper Trinity Regional Water District/Upper Trinity Conservation Trust • Environmentally Sensitive Assessment Area Policy • Regional Partnerships � Environme nt ality Emergency Man m e n • Water Quality — Water Quantity Concerns • Not usually grouped together in organizational framework • Not always funded or managed together • Consider: Organizational / Financial / Regulatory • Temporal and Spatial — Flooding events big and fast • Water Quality - big or small and fast or slow • Mitigation , Response, Recovery and Preparedness Challenges and op ortunities • Challenges: Is Limited Funding to e � . W �+- PBfn P:,.,. irtykw,w.ra a mtlutle Pam% :� c a engagement o ltac& • Regulatory challenges .. �hQ;o,�id� g . � � } g, - g y g t �1 thane vernmentneed u�� ���„� wicked Pnt 'solmions �hPiroach scommunily =issub g moires ee J n ekens families • Rapid Development is Fast" �,°��boun"d�,Ps. � probt6ffl _ s • Opportunities: • Denton has "low hanging fruit" M. • Completed and Approved Plans • Existing Stakeholder/Partner Network r • Data sets / Literature � Thanks very muchif your time David H . Hunter Rvo F David7. hunter ci enton . com Ok atershed@citvofdenton . com City of Denton Waters ed Protection ( Facebook)