Biscayne Canal Pulse Operations: Freshwater Releases Timed to Salinity Sensors at Canal Mouths
Operate South Florida canal discharges as a pulse schedule driven by real-time salinity and temperature sensors at Biscayne Bay canal mouths rather than as uncoordinated drainage. Target: keep near-mouth bottom salinity below a published seasonal threshold on at least 80 percent of days in the wet season, using the 20-year bay dataset that already shows 0.5 C warming and rising salinity. Publish a weekly public dashboard of station readings, pulse volumes, and threshold exceedances. Pair with canal-mouth seagrass plots as an ecological KPI. This is cheaper than a full bay restoration and attacks the no-reversal-mechanism gap for 429 square miles of estuary.
Biscayne Bay Adaptive Water Management Grid: Real-Time Sensor Network With Dynamic Canal Flow Control
Deploy a real-time sensor grid across 100+ stations in Biscayne Bay and connecting canals to monitor salinity, temperature, pH, and dissolved oxygen continuously. Link sensor data to automated canal flow control gates that adjust freshwater inflows to counteract saltwater intrusion. Create a Bay Health Index dashboard accessible to Miami-Dade residents and policymakers, with threshold alerts for ecosystem tipping points.
Elevation Anti-Displacement Overlay: Inclusionary Units and Tenant Right of First Refusal in Climate-Safer Neighborhoods
Create a Miami-Dade overlay on parcels at or above 8 feet NAVD88 in neighborhoods already seeing climate-driven investment pressure, starting with Little Haiti and adjacent higher-elevation tracts. Any redevelopment over 10 units must include 20 percent of units at or below 60 percent AMI for at least 30 years, recorded as deed restrictions. Tenants in occupied buildings get a 90-day right of first refusal or a relocation payment equal to 12 months of the prior rent. Success metrics: net affordable units retained or created in the overlay each year; share of Little Haiti renter households still in-place after 24 months; median rent change versus citywide. This targets the 90000-unit shortage and the property-tax incentive to replace renters with luxury product.
Little Haiti Community Land Trust: Acquiring High-Ground Property for Permanently Affordable Housing
Establish a community land trust (CLT) in Little Haiti and Liberty City to acquire and hold land at Miami's highest elevations, ensuring permanently affordable housing for existing residents. The CLT purchases properties, leases land to residents at nominal rates, and restricts resale prices to maintain affordability. Initial acquisition: 200 properties using $100 million from county surplus funds, philanthropic grants, and federal climate resilience funding. The CLT includes a community benefit agreement requiring developers who build on high ground to contribute to the trust. Also includes tenant opportunity to purchase rights (TOPA) for renters in buildings being sold, and a community preference policy for neighborhood residents in new affordable housing.
Miami-Dade School Shelter Retrofit Program: Converting 200 Schools into Category 5 Hurricane Shelters
Retrofit 200 Miami-Dade public schools to serve as Category 5 hurricane shelters, closing the 350,000-person shelter gap. Each school shelter includes: reinforced roofing (to 180 mph wind rating), impact-resistant windows, backup generator with 7-day fuel supply, water storage for 500 people for 72 hours, kitchen facilities for meal preparation, medical supply cache, and ADA-compliant accessibility. Cost: $2.5 million per school, $500 million total. Schools selected based on elevation, structural capacity, and geographic distribution across evacuation zones. Program includes multilingual shelter management training, real-time capacity tracking via mobile app, and pet-friendly shelter sections. Funded by FEMA hazard mitigation grants, state hurricane preparedness funds, and county capital improvement bonds.
Miami Beach Living Shorelines: Replace Seawalls with Hybrid Nature-Based Flood Defense
Replace Miami Beach's 55 miles of concrete seawalls with hybrid living shorelines combining mangroves, oyster reefs, and reinforced limestone. Living shorelines absorb wave energy, reduce flooding, improve water quality, and provide habitat. Cost: $20 million per mile vs $15 million for concrete, but 50% lower maintenance over 20 years. Pilot on 3 miles of Indian Creek Drive, already chronically flooded. Includes permeable pavement on adjacent roads and raised seawall base with mangrove planting on bay side. Community maintenance program trains residents in shoreline stewardship. Also includes a rising groundwater management plan with neighborhood-scale permeable infrastructure, retention areas in parks, and building code updates requiring elevation for new construction.
Miami Resilience Revenue Authority: Dedicated Sea Level Rise Funding District With Bond-Backed Adaptation Acceleration
Create a Miami-Dade Resilience Revenue Authority (MDRRA) with power to issue dedicated adaptation bonds backed by a Coastal Resilience Fee on properties below 10 feet elevation. The authority coordinates adaptation infrastructure across all 34 municipalities: accelerated pump station deployment, road elevation, seawall construction, and nature-based solutions (living shorelines, mangrove restoration). Establish forward-looking building codes requiring 2070 sea level projections for all new infrastructure.
Climate Equity Zoning: Elevation-Based Affordable Housing Mandates With Community Land Trusts in High-Elevation Miami
Implement climate equity zoning in Miami that mandates 30% affordable housing in all new developments above 8 feet elevation, funded by a climate gentrification impact fee on luxury construction. Pair with community land trusts (CLTs) that acquire and hold higher-elevation properties for permanent affordable housing. Include anti-displacement protections: right of first refusal for renters, just cause eviction requirement, and 5% annual rent increase cap for properties in designated climate-resilient zones.