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Stormwater Management Master Plan Updates There Are 16 Defined

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Stormwater Management Master Plan Updates There Are 16 Defined Stormwater Management Master Plan Updates There are 16 defined watersheds in Volusia County. Stormwater Management Master Plans (SWMP) have been prepared for the 11 of the watersheds, with the concentration on the urbanized basins. Many of these SWMPs were prepared in the 90’s and are currently over 20 years old. These plans need to be updated to address current corporate boundaries and responsibilities and to address current priorities. The SWMP updates proposed are for the Indian River Lagoon, the Halifax River, the Tomoka River and Spruce Creek. The studies will update the stormwater system improvements in these watersheds and analyze for water quantity and water quality impacts to the receiving water bodies, each of which is an impaired water body. Current Situation The Indian River Lagoon, Halifax River, Tomoka River and Spruce Creek SWMPs were completed in the 90s prior to the cities in these areas completing SWMPs. Each of these basins is an impaired water body with Total Maximum Daily Loads (TMDL) established. A Basin Management Action Plan (BMAP) has been completed for the Indian River Lagoon and the BMAP process has begun for the Halifax River (Northern Coastal Basin). Future BMAPs are scheduled for the Tomoka River and Spruce Creek basins. The goal of the SWMP Updates is to review and update Volusia County’s previous SWMPs with a focus on water quality and projects that serve areas within unincorporated Volusia County. Project The preparation of a Stormwater Management Master Plan Update for these watersheds will include: A review of previous SWMPs to determine if capital projects recommended at that time may still be recommended for grant applications An evaluation of potential water quality benefits resulting from altering or increasing stormwater maintenance practices An evaluation of water quality conditions to propose additional improvement alternatives and quantify resultant pollutant load reductions The majority of the land uses in these basins is urban and fall within city limits. The SWMP Updates will not restudy city stormwater systems where they have SWMPs but may incorporate elements of their plans in the Update. The estimated cost of each of the studies is $75,000 for a total of $300,000 for these four basins. This cost would be funded by the Stormwater Utility. Community Impact and Benefits This project will: Address flooding of structures and roadways Address stormwater treatment improving water quality Typical Timeline for a Stormwater Management Master Plan Update Months Description of Tasks 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 18 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 Project TA for engineering Study Consultant Notice to Proceed Preparation of Study LAKE GEORGE HALIFAX MIDDLE HAW CREEK DEER CREEK LITTLE HAW CREEK B-19 CANAL TOMOKA RIVER NOVA CANAL TURNBULL SPRUCE CREEK DELAND RIDGE EDGEWATER DEEP CREEK DELTONA INDIAN R/MOSQUITO LA ST JOHNS RIVER Legend Basin has an existing study Watersheds Stormwater Project County of Volusia Judy Grim - Road and Bridge Director VOLUSIA COUNTY WATERSHEDS I G:\Wksp\SMaroney\maps\grim\sw-projects\all-basins Elizabeth Street Retention Pond Project The Elizabeth Street Retention Pond Project is a project that will divert stormwater runoff from the portion of the Gabordy Canal adjacent to Edgewater Canal Road into a retention pond that will be constructed on a seven acre parcel purchased by the Volusia County Stormwater Utility just south of Elizabeth Street. The projects will add capacity to the stormwater conveyance system and provide sediment and nutrient removal enhancing water quality discharging to Mosquito Lagoon in the Indian River Lagoon Basin, an impaired water body. Current Situation The Gabordy Canal watershed is approximately 7 square miles and drains areas of the City of Edgewater, City of New Smyrna Beach and unincorporated Volusia County. Gabordy Canal discharges directly into Mosquito Lagoon in the immediate vicinity of Riverside Drive at Tenth Street. The majority of the stormwater discharging through the Gabordy Canal is untreated. There are numerous areas within the Gabordy Canal basin that are flood prone and the additional stormwater capacity in the retention pond will also provide flood protection. Drainage from this area currently flows untreated into the Mosquito Lagoon. Negative impacts include: Recent storm events have resulted in flooded structures and roadways. Untreated stormwater currently discharges to the Mosquito Lagoon in the Indian River Lagoon Basin, an impaired water body. Project The construction of a regional stormwater retention pond on the vacant land will allow diversion of a portion of the flow in the Gabordy Canal into the retention pond. This will provide additional stormwater capacity and assist in flood protection for the residential homes and roadways in this area. The retention pond will also provide stormwater treatment. Construction of retention pond will improve flood protection and provide sediment and nutrient removal improving water quality $600,000 grant funding, $600,000 local match money (Stormwater Utility) for total project cost of $1,200,000 Community Impact and Benefits This project will: Reduce flooding of structures and roadways Provide stormwater treatment improving water quality The project will reduce the potential for home and roadway flooding, reducing flood damage claims. The project will enhance property values and the quality of life in this vital residential and agricultural community. Typical Construction Timeline for Elizabeth Street Retention Pond Project Months Description of Tasks 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 18 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 Project TA for Engineering Consultant Notice to Proceed Engineering and Permitting Construction bid and award Contractor Notice to Proceed Construction IR S T RTREE C S S SUGA S H D 5T M D U D Y R S I R X S N T I E O S L I T E F S R T KEE A S L LY CI S H R D E I I V 6T V E M R E W S D M O T A L P A A MISSION DR A Y M A S O K H C L A R G Y M S G I T V N L E N I E N T O R T L S O I A ID S C S E T O T D T Q R S U B H 8T I N S A T D ST R ST 9TH TH W 7 P A RD L TON M IL D HAM R E AV Z L T HE N A C AN T AN O M C O S I IL Y V D A S L P R S OR S AP S D B T N I EI R A E K N D G L M D T R AV POR D H PP L IC L A R N I ER N K V A T O T W E KC H S EL R EPHINE ST T Y JOS 10 O E I AV V A OD WO E K DIX R S S I T D D E R E V L S P D E B P K R N A L I T E T V N S A E E R I D R E T N O T M O A E L W I D A LD S D D U W I LA S W C Q V A G R O A T D U N N E T HLA A G T W K HI N AV S O R GE D T A T I O J AKR C A P R O A D M N A E A V S L E R L S I T D Z T A A B T E U T M N H B O S L L T V D D C E V ST A O L D Z R N U A G A PE EG N E M T W Y N A R F T D L E R A AV T R AN G RN U E C C RD L ST O N E E A MA W LL R N PU A A V L V A K R R PA D R W A I L R C O A ST DR A E H D DR LEG D I A R A D E A Z M E AS S R E B V A C A S O T V L A F D V L E A C G O G N L L D U A N E T N A N Y R L L E Y N T N L E W EN S A Y O J T V R S A E R L B T N O T S Y L D D A R NN T A D R D E M R B AV ELL R RO OCEAN I R W S OR S M I O E ST N C N Y L JO T R S D N R A D V JO O A D M K S R R A O A P K D D W R Y W O Y W N Y O N S A R W Y A T R M ST D A L D D A E M ND R L LI I O H EY R S A S R S C N S W A E A T M G H S Y IT C O D E R R T A D A R W N IO E C E H FLYING M CT D R B R L D L A V K H D E T A U V R 12TH ST A N I R E T E P U R O V Q D A W M A R I U P L R C B V A I I E Legend L E E N K T R N L O L E E P O E G R E T N S N A L R L T E S D W R H A Y L T L K 14 P R Proposed Retention Area A S T M U A L O P E R P A A T L E D A M E L R R K D E E L Open Channel M N M D R L D E D K REGENT ST D R A R R O D D R Existing Retention Area R R BOND ST Elizabeth Street Stormwater Project County of Volusia ELIZABETH STREET Judy Grim - Road and Bridge Director RETENTION POND I G:\Wksp\SMaroney\maps\grim\sw-projects\elizabeth Gemini Springs Water Quality Improvement Project The Gemini Springs Water Quality Improvement Project includes the evaluation of five stormwater outfalls to recommend treatment of the stormwater prior to discharge into Gemini Springs.
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