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Green Infrastructure can Reduce Flooding and Improve Water Quality in the Florida Panhandle

Green Infrastructure can Reduce Flooding and Improve Water Quality in the Florida Panhandle

Flooding and poor water quality are common issues of concern in the Florida Panhandle. Our frequent heavy rains cause water to quickly run off rooftop, parking lot, and driveway surfaces; this runoff water carries with it the chemicals deposited on land surfaces between rain events by direct application (such as landscape fertilizers) as well as through wind and circulation, a process referred to as atmospheric deposition. Surface water that runs off our developed urban and residential landscape is usually routed into stormwater drains and sewers, and then into stormwater detention ponds or directly into surface streams. 

Dry stormwater pond in Escambia County.
Photo: Matt Deitch

Conventional methods for dealing with stormwater runoff is through the use of stormwater ponds. Stormwater ponds allow water to slowly infiltrate into the soil before moving to streams or wetlands via shallow groundwater pathways. Typically hidden behind shopping centers or in the back of residential subdivisions, stormwater ponds attenuate flooding by delaying the time when water reaches the stream and are intended to improve water quality through microbial processes (such as denitrification) or plant uptake, particularly focusing on reducing the amount of nitrogen and phosphorus that reaches nearby streams. However, the efficacy of stormwater ponds is highly variable (many do not function as intended), and they often are visually unattractive aspects of a community.  

A backyrad rain garden after installation near Navarre FL.
Photo: Nikki Bennett

Stormwater managers in other parts of Florida are increasingly utilizing a suite of management features termed “green infrastructure” as alternatives to stormwater ponds to reduce floodwaters and improve water quality before it enters nearby streams and wetlands. Green infrastructure, which includes features such as rain gardens, green rooftops, rainwater cisterns, bioswales, and permeable pavers, is designed to slow water down and reduce pollutant concentrations by mimicking natural processes of infiltration and biological uptake at its source—off the rooftops, driveways, roads, and parking lots where stormwater first concentrates. As a result, green infrastructure reduces surface runoff that occurs during storm events, leading to less flooding downstream. With the magnitude of peak flow reduced, stormwater runoff is also likely to carry lower amounts of pollutants downstream. In addition to their capacity to reduce flooding and improve water quality, green infrastructure can have many other benefits. It is often visually appealing, with vegetation typically selected to be visually attractive, appropriate for local conditions, and requiring low maintenance.

Rain garden at the VA Central Western Massachusetts Health Care System facility.
Photo: US Air Force

With our frequent rainfall, moderately developed urban areas, and expanding communities, the Florida Panhandle is ideal for using green infrastructure to reduce flooding and improve water quality. Features such as bioswales, rain gardens, and permeable pavement can be added to new development to mitigate stormwater runoff; they can also be added to existing neighborhoods to reduce flooding where roadside areas or other shared spaces allow. In addition to mitigating the effects of rainfall, green infrastructure can also improve property values because of their visual appeal. For green infrastructure techniques to be effective, they require widespread use throughout a neighborhood rather than at a handful of locations; so if it sounds like green infrastructure would benefit your community, talk with your neighbors and reach out to UF IFAS agents to discuss how it could be added to your community!

Where can you have your well water tested to ensure it is safe to drink?

Where can you have your well water tested to ensure it is safe to drink?

Contact you local county health department office for information on how to test your well water.  Image: F. Alvarado Arce

 

Residents that rely on private wells for home consumption are responsible for ensuring the safety of their own drinking water. The Florida Department of Health (FDOH) recommends private well users test their water once a year for bacteria and nitrate.

Unlike private wells, public water supply systems in Florida are tested regularly to ensure that they are meeting safe drinking water standards.

Where can you have your well water tested?

 Your best source of information on how to have your water tested is your local county health department. Most health departments test drinking water and they will let you know exactly what samples need to taken and ho w to submit a sample. You can also submit samples to a certified private lab near you.

Contact information for county health departments can be located at: http://www.floridahealth.gov/programs-and-services/county-health-departments/find-a-county-health-department/index.html

Contact information for private certified laboratories are found at https://fldeploc.dep.state.fl.us/aams/loc_search.asp

Why is it important to test for bacteria?

 Labs commonly test for both total coliform bacteria and fecal coliforms (or E. coli specifically). This usually costs about $25 to $30, but can vary depending on where you have your sample analyzed.

  • Coliform bacteria are a large, diverse group of bacteria and most species are harmless. But, a positive test for total coliforms shows that bacteria are getting into your well water. They are used as indicators – if coliform bacteria are present, other pathogens that cause diseases may also be getting into your well water. It is easier and cheaper to test for total coliforms than to test for a suite of bacteria and other organisms that can cause health problems.
  • Fecal coliform bacteria are a subgroup of coliform bacteria found in human and other warm-blooded animal feces, in food and in the environment. E. coli are one group of fecal coliform bacteria. Most strains of E. coli are harmless, but some strains can cause diarrhea, urinary tract infections, and respiratory illnesses among others.

To ensure safe drinking water, FDOH strongly recommends disinfecting your well if the water tests positive for (1) only total coliform bacteria, or (2) both total coliform and fecal coliform bacteria (or E. coli). Disinfection is usually done through shock chlorination. You can either hire a well operator in your area to disinfect your well or you can do it yourself. Information for how to shock chlorinate your well can be found at http://www.floridahealth.gov/environmental-health/private-well-testing/_documents/well-water-facts-disinfection.pdf

 Why is it important to test for nitrate concentration?

High levels of nitrate in drinking water can be dangerous to infants, and can cause “blue baby syndrome” or methemoglobinemia. This is where nitrate interferes with the blood’s capacity to carry oxygen. The Maximum Contaminant Level (MCL) allowed for nitrate in drinking water is 10 milligrams nitrate per liter of water (mg/L). It is particularly important to test for nitrate if you have a young infant in the home that is drinking well water or when well water is used to make formula to feed the infant.

If test results come back above 10 mg/L nitrate, use water from a tested source (bottled water or water from a public supply) until the problem is addressed. Nitrates in well water can come from fertilizers applied on land surfaces, animal waste and/or human sewage, such as from a septic tank. Have your well inspected by a professional to identify why elevated nitrate levels are in your well water. You can also consider installing a water treatment system, such as reverse osmosis or distillation units to treat the contaminated water. Before having a system installed, contact your local health department for more information.

In addition to once a year, you should also have your well water tested  when:

  • The color, taste or odor of your well water changes or if you suspect that someone became sick after drinking well water.
  • A new well is drilled or if you have had maintenance done on your existing well
  • A flood occurred and your well and/or septic tank were affected

Remember: Bacteria and nitrate are not the only parameters that well water is tested for. Call your local health department to discuss your what they recommend you should get the water tested for, because it can vary depending on where you live.

FDOH maintains an excellent website with many resources for private well users  at http://www.floridahealth.gov/environmental-health/private-well-testing/index.html, which includes information on potential contaminants and how to maintain your well to ensure the quality of your well water.

Aquatic Weed Control – Common Salvinia

Aquatic Weed Control – Common Salvinia

Common Salvinia Covering Farm pond in Gadsden County
Photo Credit – Shep Eubanks UF/IFAS Gadsden County Extension

Close up of common Salvinia
Photo Credit – Shep Eubanks UF/IFAS Gadsden County Extension

Aquatic weed problems are common in the panhandle of Florida.  Common Salvinia (Salvinia minima) is a persistent  invasive weed problem found in many ponds in Gadsden County. There are ten species of salvinia in the tropical Americas but none are native to Florida.  They are actually floating ferns that measure about 3/4 inch in length.  Typically it is found in still waters that contain high organic matter.  It can be found free-floating or in the mud.  The leaves are round to somewhat broadly elliptic, (0.4–1 in long), with the upper surface having 4-pronged hairs and the lower surface is  hairy.  It commonly occurs in freshwater ponds and swamps from the peninsula to the central panhandle of Florida.

Reproduction is by spores, or fragmentation of plants, and it can proliferate rapidly allowing it to be an aggressive invasive species. When these colonies cover the surface of a pond as pictured above they need to be controlled as the risk of oxygen depletion and fish kill is a possibility. If the pond is heavily infested with weeds, it may be possible (depending on the herbicide chosen) to treat the pond in sections and let each section decompose for about two weeks before treating another section. Aeration, particularly at night, for several days after treatment may help control the oxygen depletion.

Control measures include raking or seining, but remember that fragmentation propagates the plant. Grass carp will consume salvinia but are usually not effective for total control.   Chemical control measures include :carfentrazone, diquat, fluridone, flumioxazin, glyphosate, imazamox, and penoxsulam.

For more information reference these IFAS publications:

Efficacy of Herbicide Active ingredients Against Aquatic Weeds

Common salvinia

For help with controlling Common salvinia consult with your local Extension Agent for weed control recommendations, as needed.

Fishing with Vibrio in Florida

Fishing with Vibrio in Florida

During a recent fishing trip, as we jigged for bait and got repeated stuck by the tiny hooks, talk turned to the recent reports of a death and infections in the Florida Panhandle from the saltwater-dwelling bacterium, Vibrio vulnificus. Many reports used the term “flesh-eating bacteria” to refer to Vibrio.  This description is false and misleading and causes unnecessary fear and panic. Most healthy individuals are not at risk for V. vulnificus infection, however, to ensure that your time on the water is safe and enjoyable, be aware of your risk and take steps to minimize becoming infected.

The name Vibrio refers to a large and diverse group of marine bacteria. Most members are harmless, however, some strains produce harmful toxins and are capable of causing a disease known as “vibriosis.” Because of Florida’s warm climate, Vibrio are present in brackish waters year-round. They are most abundant from April to November when the water is the warmest. For infection to occur, pathogenic Vibrio strains must enter the body of a susceptible individual who either eats raw and contaminated seafood or exposes an open wound for a prolonged period in water containing these bacteria.

Symptoms of vibriosis may arise within 1–3 days, but usually occur a few hours after exposure. Infections typically begin with swelling and redness of skin, followed by severe pain, blistering, and discharge at the site of the wound. If you suspect infection, seek medical treatment immediately.

Anglers can reduce their risk by following a few safety tips.  Because fish, including live bait, carry Vibrio on their bodies, avoid or minimize handling whenever possible. The proper use of landing gear and release tools can help to minimize handling. If you cannot avoid handling the fish, use a wet towel or gloves to protect yourself. Be aware of areas that can cause injury like spines, barbs, and teeth.

Always wash your hands thoroughly after fishing, especially before handling food. Be sure to clean your gear after each use, taking special care with sharp objects like hooks and knives.

Adapted from: Abeels, H., G. Barbarite, A. Wright, and P. McCarthy. 2016. Frequently Asked Questions about Vibrio in Florida. SGEF-231.  https://eos.ucs.uri.edu/EOS_Linked_Documents/flsgp/SGEF_231_fact-sheet_2016.pdf

“An Equal Opportunity Institution”

A happy angler with a Trigger fish near Destin, Florida (Photo credit: L. Tiu).

Do you live in an area with a Basin Management Action Plan? If so, what does this mean?

Do you live in an area with a Basin Management Action Plan? If so, what does this mean?

The major goal of the Wakulla Springs Basin Management Action Plan (BMAP) is to reduce nitrogen loads to Wakulla Springs. Septic systems are identified as the primary source of this nitrogen. Photo: A. Albertin

A Basin Management Action Plan, or BMAP, is a management plan developed for a waterbody (like a spring, river, lake, or estuary) that does not meet the water quality standards set by the state. One or more pollutants can impair a waterbody. In Florida, the most common pollutants are nutrients (particularly nitrate), pathogens (fecal coliform bacteria) and mercury.

The goal of the BMAP is to reduce the pollutant load to meet water quality standards set by the Florida Department of Environmental Protection (FDEP). BMAPS are roadmaps with a list of projects and management action items to reach these standards. FDEP develops them with stakeholder input. Targets are set at 20 years, and progress towards those targets is assessed every five years.

It’s important to understand that a BMAP encompasses the entire land area that contributes water to a given waterbody. For example, the land area that contributes water to Jackson Blue Springs and Merritts Mill Pond (either from surface waters or groundwater flow) is 154 square miles, while the Wakulla Springs Basin covers an area of 1,325 square miles.

BMAPs in the Panhandle

There are 33 adopted BMAPS in the state, and 5 that are pending adoption. Here in the Panhandle, we have three adopted BMAPS. They are the Bayou Chico BMAP in Escambia County, the Wakulla Springs BMAP in Wakulla, Leon, Gadsden and small parts of Jefferson County, and the Jackson Blue/Merritts Mill Pond BMAP in Jackson County. All three are impaired for different reasons.

  • Bayou Chico discharges into Pensacola Bay and is polluted by fecal coliform bacteria. The BMAP addresses ways to reduce coliforms from humans and pets, which includes sewer expansion projects, stormwater runoff management, septic tank inspections, pet waste ordinances and a Clean Marina and Boatyard program.
  • Wakulla Springs Nitrate from human waste is the main pollutant to Wakulla Springs, and Tallahassee’s wastewater treatment facility and the city’s Southeast Sprayfield were identified as the main sources. Both sites were upgraded (the sprayfield was moved), greatly reducing nitrate contributions to the spring basin. The BMAP is focused on septic systems and septic to sewer hookups.
  •  Jackson Blue/Merritts Mill Pond Nitrate is also the primary pollutant to the Jackson Blue/Merritts Mill Pond Basin, but nitrogen fertilizer from agriculture is identified as the main source. This BMAP focuses on farmers implementing Best Management Practices (BMPs), land acquisition by the Northwest Florida Water Management District , as well as septic tanks, recognizing their nitrogen contribution to Merritts Mill Pond.

Once all the BMAPS are adopted, FDEP states that almost 14 million acres will be under active basin management, an area that includes more than 6.5 million Floridians.

Adopted and pending BMAPS in Florida. Source: FDEP Statewide Annual Report, June 2018

How are residents living in an area with a BMAP affected? It varies by BMAP and specifically land use within its boundaries. For example, in BMAPs where nitrogen from septic systems are found to be a major source of nutrient impairment to a water body, septic to sewer hookups, or septic system upgrades to more advanced treatment units will be required in specific areas. In urban areas where nitrogen fertilizer is an important source, municipalities are required to adopt fertilizer ordinances. Where nitrogen fertilizer from agricultural production is a major source of impairment, producers are required to implement Best Management Practices to reduce nitrogen loads.

More information about BMAPS

For specific information on BMAPS, FDEP has an excellent website: https://floridadep.gov/dear/water-quality-restoration/content/basin-management-action-plans-bmaps All BMAPs (full reports with specific action items listed) can be found there, along with maps, information about upcoming meetings and webinars and other pertinent information.

Your local Health Department Office is the best resource regarding septic systems and any ordinances that may apply to you depending on where you live. Your Water Management District (in the Panhandle it’s the Northwest Florida Water Management District) is also an excellent resource and staff can let you know whether or not you live or farm in an area with a BMAP and how that may affect you.

Farmers are doing their part to protect Florida’s Shoal Bass

Farmers are doing their part to protect Florida’s Shoal Bass

By Vance Crain and Andrea Albertin

Fisherman with a large Shoal Bass in the Apalachicola-Chattahootchee-Flint River Basin. Photo credit: S. Sammons

Along the Chipola River in Florida’s Panhandle, farmers are doing their part to protect critical Shoal Bass habitat by implementing agricultural Best Management Practices (BMPs) that reduce sediment and nutrient runoff, and help conserve water.

Florida’s Shoal Bass

Lurking in the clear spring-fed Chipola River among limerock shoals and eel grass, is a predatory powerhouse, perfectly camouflaged in green and olive with tiger stripes along its body. The Shoal Bass (a species of Black Bass) tips the scale at just under 6 lbs.  But what it lacks in size, it makes up for in power. Unlike any other bass, and found nowhere else in Florida, anglers travel long distances for a chance to pursue it. Floating along the swift current, rocks, and shoals will make you feel like you’ve been transported hundreds of miles away to the Georgia Piedmont, and it’s only the Live Oaks and palms overhanging the river that remind you that you’re still in Florida, and in a truly unique place.

Native to only one river basin in the world, the Apalachicola-Chattahoochee-Flint (ACF) River Basin, habitat loss is putting this species at risk. The Shoal Bass is a fluvial specialist, which means it can only survive in flowing water. Dams and reservoirs have eliminated habitat and isolated populations. Sediment runoff into waterways smothers habitat and prevents the species from reproducing.

In the Chipola River, the population is stable but its range is limited. Some of the most robust Shoal Bass numbers are found in a 6.5-mile section between the Peacock Bridge and Johnny Boy boat ramp. The Florida Fish and Wildlife Conservation Commission has turned this section into a Shoal Bass catch and release only zone to protect the population. However, impacts from agricultural production and ranching, like erosion and nutrient runoff can degrade the habitat needed for the Shoal Bass to spawn.

Preferred Shoal Bass habitat, a shoal in the Chipola River. Photo credit: V. Crain

Shoal Bass habitat conservation and BMPs

In 2010, the Southeast Aquatic Resources Partnership (SARP), the National Fish and Wildlife Foundation and a group of scientists (the Black Bass Committee) developed the Native Black Bass Initiative. The goal of the initiative is to increase research and the protection of three Black Bass species native to the Southeast, including the Shoal Bass. It also defined the Shoal Bass as a keystone species, meaning protection of this apex predators’ habitat benefits a host of other threatened and endangered species.

Along the Chipola River, farmers are teaming up with SARP and other partners to protect Shoal Bass habitat and improve farming operations through BMP implementation. A major goal is to protect the river’s riparian zones (the areas along the borders). When healthy, these areas act like sponges by absorbing nutrients and sediment runoff. Livestock often degrade riparian zones by trampling vegetation and destroying the streambank when they go down to a river to drink. Farmers are installing alternative water supplies, like water wells and troughs in fields, and fencing out cattle from waterways to protect these buffer areas and improve water quality. Row crop farmers are helping conserve water in the river basin by using advanced irrigation technologies like soil moisture sensors to better inform irrigation scheduling and variable rate irrigation to increase irrigation efficiency. Cost-share funding from SARP, the USDA-NRCS and FDACS provide resources and technical expertise for farmers to implement these BMPs.

Holstein drinking from a water trough in the field, instead of going down to the river to get water which can cause erosion and problems with water quality. Photo credit: V. Crain

By working together in the Chipola River Basin, farmers, fisheries scientists and resource managers  are helping ensure that critical habitat for Shoal Bass remains healthy. Not only is this important for the species and resource, but it will ensure that future generations can continue to enjoy this unique river and seeing one of these fish. So the next time you catch a Shoal Bass, thank a farmer.

For more information about BMPs and cost-share opportunities available for farmers and ranchers, contact your local FDACS field technician: https://www.freshfromflorida.com/Divisions-Offices/Agricultural-Water-Policy/Organization-Staff  and NRCS field office USDA-NRCS field office: https://www.nrcs.usda.gov/wps/portal/nrcs/main/fl/contact/local/ For questions regarding the Native Black Bass Initiative or Shoal Bass habitat conservation, contact Vance Crain at vance@southeastaquatics.net

Vance Crain is the Native Black Bass Initiative Coordinator for the Southeast Aquatic Resource Partnership (SARP).