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New Water Quality Database

Retired IT Consultant and LLPS Member Hans Samios applied his time, expertise, and knowledge to creating Lagoon Guardians, our new water quality database:

 Little Lagoon Water Quality Records

How to use the Lagoon Guardians App

Hans Samios has created a video explaining how to access Lagoon Guardians and the ways you can interact with and use the water quality data: 

https://www.loom.com/share/3277748be0b8418698df54498f53fde2

Why do we monitor water quality in Little Lagoon and surrounding waters?

We monitor water quality so we know that we are swimming, fishing, and recreating in waters that will not harm us and will support abundant life. 

We want to know if change is happening in the Lagoon for better or worse. Little Lagoon sometimes has problems with fecal bacteria, harmful algal blooms, summertime hypoxia, water bottom "ooze" accumulations, murky water due to high algae levels and high nutrient (nitrogen and phosphorus) levels due to ground water aquifer contributions.  Frequent monitoring of these parameters can help make the public and regulatory agencies aware of potential problems before they occur. 
To properly characterize and understand the health of area waters we measure various parameters - dissolved oxygen, salinity, Ph, water temperature, water clarity, fecal bacteria, nutrients, and phytoplankton (micro algae). 

According to National Geographic, “Citizen science is the practice of public participation and collaboration in scientific research to increase scientific knowledge. Through citizen science, people share and contribute to data monitoring and collection programs."  As local citizen scientists, we  are more familiar with our environmental setting and see it more frequently than a government official.  As such, we are often the first to noice environmental changes.  Our monitoring efforts can and do make government officials aware of issues before they grow out of control.

About Our Water Monitoring Program and Citizen Scientists

The LLPS volunteer water quality (WQ) monitoring program is considered by our peers and researchers to be “cutting edge.” The program was initiated by Dauphin Island Sea Lab (DISL) researchers Dr. Hugh MacIntyre, Dr. Justin Leifer and Dr. Lucie Novoveska in 2007. Our volunteers have been trained by professionals with Alabama Water Watch (AWW), the NOAA Southeastern Phytoplankton Monitoring Network (SEPMN), DISL researchers and veteran-trained LLPS personnel. We receive follow-up oversight from these professionals. 

LLPS volunteers have monitored 5 sites within the Lagoon approximately every two weeks since 2007- 1-LLSE, 2-LLNE, 3-LLNW, 4-LLSW and 5-LLGL (Gator Lake). In April of 2025 we add 6-LLSB which is near the mouth of a bayou which flows from Lake Shelby to the Lagoon near 1-LLSE. Fresh water from that bayou strongly influences 1-LLSE salinity and bacteria levels in the Lagoon. Currently, nine volunteers from two “teams” alternate sampling every two weeks. This means each team normally samples once per month. 

Team 1 team leader is Lloyd Moore and Team 2 team leader is Allen Gipson. Dennis Hatfield sets up the materials needed for sampling at Site 2-NE (his home) for the sampling teams, brings equipment needed for sampling, incubates and counts bacteria samples, identifies and quantifies phytoplankton and enters data into our nearly 20-year-old database. Retired Civil Engineer, Lloyd Moore, maintains and calibrates our multimeter probe and also enters our data into the Water Rangers and the Lagoon Guardian database.

If you would like to join our WQ monitoring group, please contact Dennis Hatfieldat dennishatfield17@gmail.com and you will be assigned to a group and receive hands-on training by Dennis and the team leaders. You will be asked to be available once per month for about 3 hours per outing. Our sampling program normally begins at 9AM on a sampling day and ends by about noon. During longer summer days we move up our sampling to 8AM. 

We still encourage and ask our new members to receive basic training with AWW early in their tenure as WQ volunteers. If you would like to have a graphical look at most of our data, click on the location site in which you are interested. 

Click the map below to interact with the six sampling site markers:


What do we measure and why?

  • Dissolved Oxygen:  Adequate dissolved oxygen levels are essential to support the fish, shrimp and crabs we love to eat. 
  • PH: Water which has Ph that is too low too or high can negatively affect life in the lagoon. 
  • Salinity: Salinity measurements help us estimate circulation and flushing of the Lagoon via the Lagoon tidal inlet/pass. They also help us estimate freshwater aquifer contributions to the lagoon. Varied salinities across the Lagoon are extremely important and support diverse and abundant life. 
  • Turbidity: Turbid waters can indicate algal blooms, contribute to bottom “ooze” and negatively impact sea grass growth. 
  • Fecal Bacteria: High fecal bacteria levels can make us sick if we are exposed to or ingest lagoon waters or eat uncooked seafood.
  • Phytoplankton/Micro Algae: Harmful algal blooms can cause fish kills, harbor toxins an
  • d make us sick. 
  • Nutrients: High nutrient levels can be predictors of and cause harmful algal blooms. 
   Little Lagoon Water Quality Data

Site 1 SE: See recent data

Site 2 NE:  See recent data

Site 3 NW: See recent data

Site 4 SW: See recent data

Site 5 Gator Lake: See recent data

Site 6 8th Street Bayou: See recent data


We would like to thank George and Jean Dunn for making this possible by helping establish this program and allowing us to use their home on West 8th Avenue for Site 1-SE and for a lab. Jean’s son, Chris Anderson, has carried on the tradition with the passing of Jean and for that we are most grateful.

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