Texas Speleological Survey

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This page last updated September 20, 2009

Statistics by County

TSS Database Statistics

Category

Count

Database Records

9520

Caves

4387

Sinks/Features

1524

Shelters

262

Springs

2816

Undefined

321

Rumored

271

Aesthetic Caves

77

Archeologically Significant

179

Bad Air Caves

210

Bat Caves

185

Biologically Significant

344

Endangered Species

144

Geologically Significant

70

Historically Significant

64

Hydrologically Significant:

119

Paleontologically Significant

94

Number of Texas Counties with recorded karst data

208

Number of records with location data

7181

Number of records without location data - Topographic Map defined

1108

Lost Caves - no location or Topographic Map

1330

 

Definitions:

The numbers in the right hand column won't add up to the total number of TSS database records because some records have multiple designations such as cave and spring.

Database records:

The number of database records (rows) representing all caves, karst features, sinkholes, and shelters.

Cave:

Cave: a naturally occurring, humanly enterable cavity in the earth, at least 5 m (15' 6") in length and/or depth, and where no dimension of entrance exceeds the length or depth of the cavity.

Sinks/Features:

Anything representing cave activity that doesn't meet the minimum definition of a cave.

Shelter:

A rock overhang.      

Spring:

Can also be a cave.

Undefined:

Records that haven't been defined as a cave, Sink/feature, spring, shelter, or rumored.

Rumored:

A record entered on the basis of a reported rumor that hasn’t been verified.

Archeologically Significant:

A record flagged due to known archeological activity or observed material.  Typically a sensitive location for visitation.

Biologically Significant:

A record flagged due to presence of biological species of unusual diversity and/or uniqueness. 

Endangered Species:

A record flagged due to presence of biological species of endangered status. 

Geologically Significant:

A record flagged due to presence of unusual or unique mineralogical, structural, and/or lithological features.

Historically Significant:

A record flagged due to presence of artifacts, signatures, and/or other material older than 50 years that has historical importance, yet is not prehistoric. May be site of historic event.

Hydrologically Significant:

Caves or features of notable importance to aquifers for their capacity to recharge and discharge groundwater, relatively high potential to pollute aquifers if they recharge contaminants, and/or their utility in monitoring karst aquifers.

Paleontologically Significant:

A record flagged due to presence of paleontological material that is recognized or inferred to be of importance.

Number of Texas Counties with recorded karst data:

The number of counties in the State of Texas with at least on record in the database.

Number of records with location data:

The number of records in the database having a recorded location in both UTM and LAT/LON.  The TSS currently records location data using the NAD27 CONUS datum.

Number of records without location data - Topographic Map defined:

The number of TSS records without a UTM or LAT/LON location but with a Topographic Map Defined.

Lost Caves - no location or Topographic Map:

The number of caves without any location data, i.e., UTM or Lat/Lon and no topographic map.  Some of these have very thorough maps and reports.