Coral Gables Waterway City Contact:
Utilities & Right-of-Way Division Chief
For information on mangroves please visit our City Mangrove informational web page at www.coralgables.com/mangroves . Here you will find additional background information and resources related to mangroves, mangrove trimming, state laws and regulations, etc.
What is Nutrient Pollution?
Potential Sources of Nutrient Pollution
To view the City's Best Management Practices on reducing non-point source pollution and promoting the efficient use of water while maintaining our City beautiful please visit our Best Management Practices web-page
Tips to Reduce Nutrient Runoff Pollution
|Storm Water/Nutrient Runoff Brochure [English]||Storm Water/Nutrient Runoff Brochure [Spanish]|
Scope of Work
Coastal wetlands provide essential direct livelihood services to millions of people, as well as critical regulating services such as maintenance of water quality, protection from storms and erosion, and carbon sequestration. Measuring the vertical movement of the coastal wetland surface and its constituent processes, and relative local sea-level rise (SLR) is necessary to determine whether a wetland can keep pace with SLR.
3 monitoring stations have been installed throughout the City waterways as a part of this project, with two of the stations including both tidal and sediment elevation (RSET-MH) monitoring: (1) Inland Coral Gables waterway, (2) coastal Coral Gables waterway, and (3) Matheson Hammock Park/Preserve.
Tidal & Water Level Monitoring
Each of the 4 sampling stations include a pressure gauge (Level Troll with conductivity and pressure sensors) that is installed and referenced to NAVD88 and to RSET benchmarks. Water level data are recorded at 15 minute intervals. Locations for tidal stations include Blue Road and Islands of Cocoplum along the Coral Gables waterway where water surface height near coast and inland, to detect potential differences due to rain and canal discharge between inland and outflow waterway locations, are monitored. Mangrove forest water levels are monitored at each RSET site in Matheson Hammock Park and in Islands of Cocoplum mangrove forest areas (blue stars). As part of tidal station maintenance, pressure transducers are field checked with on-site water level measurements, dessicants checked and replaced as needed, and data downloaded monthly. All 4 stations are set up with a telemetry system to obtain real-time data
Two sediment elevation monitoring sites have been established in mangrove forest areas. From the benchmark pipe, a RSET arm with 9 vertical pins is used to measure the height of the soil relative to the referenced benchmark (36 measurements total). SET measurements are conducted every 6 months. Feldspar marker horizons are established to assess vertical change in soil elevation due to deposition of sediments and organic materials.
CREST buoy with autosampler at the Blue Road sampling site
Below you will find a link to the live stream data. The buoy is called "CREST_1".
Coral Gables Water Quality Assessment Project Update Presentation to Coral Gables Waterways Advisory Board: CoralGablesWAB_Jan2021 [PDF]
Coral Gables Virtual Community Discussion on Water and Water Quality
On November 5, 2020 the City of Coral Gables held a virtual community discussion on water and water quality. Below are the presentations and a link to the recording of that meeting.
Topics discussed during this meeting: