United States » Last Spring

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Overview Location & Specifics Conditions Resources Nearby Systems  
Portions of the following information were taken from Florida Geological Survey Bulletin 66.

Last Spring is located on the bottom of the Tampa Bypass Canal near the center of the canal. It is approximately 0.35 miles north of the I-75 bridge and just 150 ft southeast of the boat access barrier cable across the canal. Last Spring can be reached by boat from the south.

Description - Last Spring discharges from the bottom of the Tampa Bypass Canal. Clear spring water mixes with tannic canal water over the vent. Turbulence from spring discharge creates a circular slick spot on the surface of the canal waters. Canal depths near the spring average 15 ft, but depth measured over the vent is 20 ft. The Tampa Bypass Canal was constructed to divert flood waters of the Hillsborough River around Tampa. Canal construction appears to have broken into underground conduits and tapped into the Floridan Aquifer System. At least three new springs were created during canal building - Canal Spring, Double Spring, and Last Spring. Each of these springs is visible as slick circular boils on the surface of the dark waters of the canal.
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Latitude: 28.0362
Longitude: -82.34386
Coordinate System:
Maximum Depth: 35'
 Cave Diving
 Cavern Diving
 Open Water Diving
Date Submitter Visbility Remarks
6/16/2012 KUR 30' Excavated around 800# of debris from the opening. The opening is now a nice smooth 5' diameter solution tube. More excavation is needed in order to can access to the cave. Water was clear and water temp was 70
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Description Type Date Author Remarks
Sslect Search Radius:
System Depth Cave Cavern OW Last Report Distance (mi)
   Trout Creek Spring True False False 4/1/2024 3.8
   Little Blue Sink 280 True True False 8/18/2009 2.9
   Chicken Farm Sink 200 True True False 8/18/2009 2.9
 Overview Information Available for Double Spring  Double Spring True False False 7/4/2008 0.1
   I-75 Sink False False False 1/2/2006 2.5
   Spider's Web 75 True False False 1.8
   Sand Boils 18 True True True 6.7
   Pipe Spring True False False 0.1
 Overview Information Available for Lettuce Lake Spring  Lettuce Lake Spring False False False 1.3
 Overview Information Available for Sulphur Springs  Sulphur Springs 120 True False False 6.7