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
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Water bodies, watersheds and storm water
Holiday Springs main view

Holiday Springs main view

Holiday Springs

Lake County

Description

Holiday Springs is a third-magnitude spring that was formerly referred to as the Spring at Echo Glen at Yalaha. The spring discharges from a nearly horizontal, sand-filled cavity about 2 feet below the pool surface. The small, circular spring pool is about 5 feet in diameter at the upper end of a shallow and narrow ravine. Flow from the pool and additional small sand boils in the meandering run is toward the north, through a hardwood forest, for 0.25 mile to Lake Harris. A few hundred feet down the run from the head of the spring, the spring flow is sometimes diverted to a private swimming pool.

Holiday Springs run

Holiday Springs run

Discharge

Discharge at Holiday Springs was measured by the U.S. Geological Survey (USGS) five times from 1946 to 1972. St. Johns River Water Management District measured discharge 91 times from 1991 to 2010 and currently measures discharge 12 times per year. The difference between the minimum and maximum discharges is 4.02 cubic feet per second (cfs) over the period. The maximum discharge of 4.91 cfs was measured in May 1998; the minimum discharge of 0.89 cfs was measured in May 2001. The mean and median discharges for the period from 1946 to 2010 are 2.88 cfs and 2.80 cfs, respectively (see the table below).

Holiday Springs Discharge Graph
Discharge Graph

Water quality

Holiday Springs was sampled by USGS in 1967 and 1972. The district sampled Holiday Springs 12 times from 1991 to 2001, and Lake County sampled the spring twice in 2004. Summary statistics of the water quality data for selected variables are shown in the table below.

Holiday Springs Water Quality Graph
Water Quality Graph

Summary statistics of water quality and discharge at Holiday Springs

Holiday Springs Min Mean Median Max Count Period
Discharge, cfs 0.89 2.88 2.80 4.91 96 1946−2010
Alkalinity, total, mg/L as CaCO3 97.0 104.3 103.3 126.0 16 1967−2004
Calcium, total, mg/L as Ca 37.9 40.5 40.0 43.2 9 1996−2004
Chloride, total, mg/L as Cl 6.5 10.8 11.0 14.0 16 1967−2004
Dissolved Oxygen 1.11 1.40 1.43 1.60 6 1991−2001
Fluoride, total, mg/L as F 0.09 0.10 0.10 0.11 8 1996−2001
Magnesium, total, mg/L as Mg 6.0 6.8 6.9 7.6 10 1996−2004
Nitrate + nitrite, total, mg/L as N 3.10 4.02 3.92 7.18 10 1996−2004
Orthophosphate, total, mg/L as P 0.03 0.04 0.04 0.06 8 1996−2001
pH, field 7.10 7.49 7.40 8.10 13 1967−2004
Phosphorus, total, mg/L as P 0.02 0.04 0.04 0.09 4 1991−2001
Sodium, total, mg/L as Na 5.2 5.9 6.0 6.1 10 1996−2004
Specific conductance, field, µmhos/cm at 25°C 270 289 286 316 14 1991−2004
Specific conductance, lab, µmhos/cm at 25°C 225 260 263 293 3 1967−2001
Sulfate, total, mg/L as SO4 2.8 9.0 8.5 16.6 14 1972−2004
Total dissolved solids, mg/L 129 170 171 200 15 1967−2004
Water temperature, °C 23.7 24.0 23.9 25.3 16 1967−2004
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 Holiday Springs was determined by measuring the concentration of carbon-14 and carbon-13 in the spring discharge, which was measured in May 2001. Holiday Springs had a carbon-14 concentration of 34% modern carbon and a delta carbon-13 value of −9.4 parts per thousand. The carbon-14 concentration can result from the reaction of rainfall with calcite, dolomite, and soil organic matter. The age of Holiday Springs discharge is less than 50 years.

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