St. Johns River Water Management District St. Johns River Water Management District St. Johns River Water Management District St. Johns River Water Management District St. Johns River Water Management District St. Johns River Water Management District
St. Johns River Water Management District -

Water bodies, watersheds and storm water
Snail Springs Boil A

Close-up of Snail Springs Boil A

Snail Springs

Lake County


Snail Springs is a fifth-magnitude spring that is composed of a series of sand boils labeled A, B, C, and D. The springhead at Boil A is a small pool with several sand boils. B boils up in a relatively large pool about 150 feet down the run, C is another 120 feet away, and D is about another 150 feet past C. Boil D has 16-inch clay pipe on the side of the pool near two palm trees. Boil D runs about 150 feet to the main spring run. Oak, pine, palm, and banana trees are common in the area around the springs and run.

Snail Springs run

Snail Springs run


Discharge from Snail Springs, measured in 2005 and 2008 by the St. Johns River Water Management District, had a mean discharge that was 0.26 cubic feet per second (see the table below).

Water quality

Snail Springs was sampled twice by Lake County in 2004 and by the district in 2005. Summary statistics of the water quality data for selected variables are shown in the table below.

Summary statistics of water quality and discharge at Snail Springs

Snail Springs Min Mean Median Max Count Period
Discharge, cfs 0.09 0.26 0.26 0.42 2 2005−2008
Alkalinity, total, mg/L as CaCO3 105.0 108.9 110.0 110.7 4 2004−2005
Calcium, total, mg/L as Ca 43.6 49.0 49.6 53.2 4 2004−2005
Chloride, total, mg/L as Cl 6.6 7.4 7.6 7.8 4 2004−2005
Dissolved Oxygen 0.23 0.32 0.32 0.40 2 2004
Magnesium, total, mg/L as Mg 12.6 13.5 13.7 14.2 4 2004−2005
Nitrate + nitrite, total, mg/L as N 0.01 0.02 0.02 0.04 3 2004−2005
pH, field 7.40 7.67 7.66 7.97 4 2004−2005
Potassium, total, mg/L as K 0.6 1.0 1.0 1.3 4 2004−2005
Sodium, total, mg/L as Na 4.5 5.0 5.3 5.3 3 2004−2005
Specific conductance, field, µmhos/cm at 25°C 354 362 362 371 4 2004−2005
Sulfate, total, mg/L as SO4 59.5 62.6 62.2 66.2 3 2004−2005
Total dissolved solids, mg/L 199 215 213 233 4 2004−2005
Water temperature, °C 23.2 23.6 23.5 24.2 4 2004−2005
Units: µmhos/cm = micromhos per centimeter
         mg/L = milligrams per liter
         cfs = cubic feet per second

Age of discharge water

The age of water discharging from Snail Springs was determined by measuring the concentration of tritium, carbon-14, and carbon-13 in the spring discharge, which was measured in March 2005. Snail Springs had a tritium concentration of 0.82 tritium units and a carbon-14 concentration of 30 percent modern carbon and a delta carbon-13 value of −8.68 parts per thousand. The tritium concentration suggests that the water is between 40 and 70 years old. The carbon-14 concentration of 30% modern carbon can result from the reaction of rainfall with calcite, dolomite, and soil organic matter.


In this section
More about


Governing Board meetings
Please see agendas for specific meeting times, which may differ monthly.

Lobbyist registration requirements

Other district meetings and notices

Central Florida Water Initiative

Tell us how
we are doing.

Take our survey on
customer service.

By accessing this site, you agree to accept terms and conditions of the district’s liability disclaimer.

Employee Portal

St. Johns River Water Management District
4049 Reid Street, Palatka, FL 32177
(800) 725-5922