seacoast utility authority water use permit steven memberg, section leader water use regulation...
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Seacoast Utility AuthorityWater Use PermitSeacoast Utility AuthorityWater Use Permit
Steven Memberg, Section LeaderWater Use Regulation Division, Water Supply DepartmentJanuary 26, 2009
Steven Memberg, Section LeaderWater Use Regulation Division, Water Supply DepartmentJanuary 26, 2009
Seacoast Utility AuthoritySeacoast Utility Authority
Loxahatchee River
Seacoast UtilityService Area
Seacoast Utility AuthoritySeacoast Utility AuthorityUtility Service Area includes: Palm Beach Gardens
North Palm Beach Juno Beach
Lake Park Unincorporated areas
of PBC
Hood Road Wellfield
PBG WellfieldNPB Wellfield
Burma Road Wellfield
Originally permitted in 1976
Current Allocation
Population 101,664 (2005)
Per Capita 190
Annual 19.31 MGD
Proposed Allocation
Population 102,423 (2012)
Per Capita 190
Annual 19.46 MGD
Seacoast Utility AuthoritySeacoast Utility Authority
Minimum Flows and Levels (MFL) covers:
Northwest Fork of the Loxahatchee River
(G-92 to River Mile 6)
Consumptive Use Permit Rule Protections for the LoxahatcheeConsumptive Use Permit Rule Protections for the Loxahatchee
Minimum Flows and Levels (MFL) covers:
Northwest Fork of the Loxahatchee River
(G-92 to River Mile 6)
Including tributaries:
Kitching Creek
Hobe Grove Ditch
Cypress Creek
Consumptive Use Permit Rule Protections for the LoxahatcheeConsumptive Use Permit Rule Protections for the Loxahatchee
Minimum Flows and Levels (MFL)
MFL violation occurs when an exceedance occurs more than once in a six year period.
Flows over Lainhart Dam decline below 35 cfs for more than 20 consecutive days.
Average daily salinity concentration on a 20-day rolling average exceeds two parts per thousand at river mile 9.2
Northwest Fork is not currently meeting the MFL, therefore rule requires implementation of a recovery strategy
Consumptive Use Permit Rule Protections for the LoxahatcheeConsumptive Use Permit Rule Protections for the Loxahatchee
Recovery Strategy
One component of recovery strategy is the implementation of the Regional Water Availability Rule
“requested allocation will not cause a net increase in the volume or cause a change in the timing on a monthly basis of surface and ground water withdrawn from …the North Palm Beach County / Loxahatchee River Watershed Waterbodies over that resulting from the base case”
Consumptive Use Permit Rule Protections for the LoxahatcheeConsumptive Use Permit Rule Protections for the Loxahatchee
Seacoast Utility AuthoritySeacoast Utility Authority
Seacoast UtilityService Area
Loxahatchee River
Loxahatchee River Watershed Waterbodies
Regional Water Availability
Calibrated groundwater flow model
Annual requested withdrawal of 8,084 MG modeled to accommodate two operating plans:
Prime Scenario – Hood Road Wellfield
Alternate 1 – Palm Beach Gardens Wellfield
Transient model using a 27-month scenario simulating 1-in-10 drought conditions
Seacoast Utility AuthoritySeacoast Utility Authority
Seacoast Utility AuthoritySeacoast Utility Authority
Regional Water Availability
No net increase in the volume or change in timing on a monthly basis of surface and ground water withdrawn from the “Waterbodies”
Minimum Flows and Levels (MFL)
No direct or indirect withdrawal from MFL body
No contribution to existing MFL violations
Other environmental considerations
Drawdown impacts and mitigation for wetlands in the wellfields’ cone of influence are still under evaluation.
Staff EvaluationStaff Evaluation