| Specimen ID | 229784 |
| Group | Plants |
| Genus | Hydrilla |
| Species | verticillata |
| Subspecies | verticillata |
| Common Name | whorled hydrilla |
| State | TX |
| County | Bexar |
| Locality | Calaveras Reservoir |
| Mapping Accuracy | Accurate |
| HUC8 Name | Upper San Antonio |
| HUC8 Number | 12100301 |
| HUC10 Name | Calaveras Creek-San Antonio River |
| HUC10 Number | 1210030103 |
| HUC12 Name | Upper Calaveras Creek |
| HUC12 Number | 121003010302 |
| Map | |
| Collection Year | 1995 |
| Year Accuracy | Actual |
| Potential Pathway | unknown |
| Status | eradicated |
| Reference 1 |
| Ref. Number: | 10233 |
| Author: | Helton, R.J., and L.H. Hartmann. |
| Date: | 1996 |
| Title: | Statewide Aquatic Vegetation Survey Summary, 1995 Report. |
| Publisher: | Inland Fisheries Division, District 3-E, Jasper, Texas. |
| Pages: | 38 |
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| Reference 2 |
| Ref. Number: | 27913 |
| Author: | Myers, R., and J. Dennis. |
| Date: | 2008 |
| Title: | 2007 survey report - Calaveras Reservoir |
| Publisher: | Texas Parks and Wildlife Department |
| Pages: | 23 pp |
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| Comments | Found in 2007 in <1 acre, but not seen in 2011 survey |
| Record Type | Literature |
| Freshwater/Marine | Freshwater |