Edwards Aquifer
E596701
The Edwards Aquifer is a vast karst limestone groundwater system in central Texas that serves as a primary water source for San Antonio and surrounding communities.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Edwards Aquifer canonical | 4 |
| Barton Springs Segment | 1 |
| Edwards Aquifer (regional) | 1 |
| Edwards Aquifer recharge zone | 1 |
| Edwards Plateau aquifer system | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6489511 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Edwards Aquifer Context triple: [San Antonio River, source, Edwards Aquifer]
-
A.
Comal River
The Comal River is a short, spring-fed river in New Braunfels, Texas, popular for recreation such as tubing and known for its clear, constant-temperature waters.
-
B.
Conchas Lake
Conchas Lake is a large reservoir in eastern New Mexico known for boating, fishing, and camping within Conchas Lake State Park.
-
C.
Claro River Valley
Claro River Valley is a Chilean wine-producing subregion within the Maule Valley, known for its diverse terroir and production of both red and white varietals.
-
D.
San Marcos River
The San Marcos River is a spring-fed waterway in central Texas known for its clear, constant-temperature waters, recreational activities, and ecological significance.
-
E.
San Antonio Reservoir
San Antonio Reservoir is a major water storage facility in California that supplies drinking water to the San Francisco Bay Area as part of its regional reservoir network.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Edwards Aquifer Target entity description: The Edwards Aquifer is a vast karst limestone groundwater system in central Texas that serves as a primary water source for San Antonio and surrounding communities.
-
A.
Comal River
The Comal River is a short, spring-fed river in New Braunfels, Texas, popular for recreation such as tubing and known for its clear, constant-temperature waters.
-
B.
Conchas Lake
Conchas Lake is a large reservoir in eastern New Mexico known for boating, fishing, and camping within Conchas Lake State Park.
-
C.
Claro River Valley
Claro River Valley is a Chilean wine-producing subregion within the Maule Valley, known for its diverse terroir and production of both red and white varietals.
-
D.
San Marcos River
The San Marcos River is a spring-fed waterway in central Texas known for its clear, constant-temperature waters, recreational activities, and ecological significance.
-
E.
San Antonio Reservoir
San Antonio Reservoir is a major water storage facility in California that supplies drinking water to the San Francisco Bay Area as part of its regional reservoir network.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf | karst aquifer ⓘ |
| aquiferType |
artesian aquifer
ⓘ
confined aquifer ⓘ karst aquifer ⓘ |
| associatedWithSpecies |
San Marcos gambusia
ⓘ
Texas blind salamander ⓘ fountain darter ⓘ |
| composedPrimarilyOf | limestone ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| dischargesTo |
springs
ⓘ
wells ⓘ |
| extendsUnder |
Bexar County, Texas
ⓘ
linked to:
Bexar County
Comal County, Texas ⓘ
linked to:
Comal County
Hays County, Texas ⓘ
linked to:
Hays County
|
| geologicalFormation | Edwards Group limestone ⓘ |
| governedBy | pumping permits ⓘ |
| hasHydrogeologicRegion |
Barton Springs Segment
ⓘ
linked to:
Edwards Aquifer
Northern Segment ⓘ San Antonio Segment ⓘ |
| hasLegalProtectionStatus | federally regulated under the Endangered Species Act (via spring-dependent species) ⓘ |
| hydrologicConnectionTo |
Comal River
ⓘ
San Marcos River ⓘ |
| locatedIn |
Central Texas
ⓘ
linked to:
central Texas
|
| majorSpring |
Barton Springs
ⓘ
linked to:
Barton Springs Pool
Comal Springs ⓘ San Antonio Springs ⓘ San Marcos Springs ⓘ |
| managedBy | Edwards Aquifer Authority ⓘ |
| monitoredBy |
observation wells
ⓘ
springflow gauges ⓘ |
| primaryWaterSourceFor |
San Antonio, Texas
ⓘ
surrounding communities in Central Texas ⓘ |
| rechargedBy |
losing streams
ⓘ
rainfall infiltration ⓘ sinkholes ⓘ |
| region |
Edwards Plateau
ⓘ
linked to:
Hill Country of Texas
|
| state | Texas ⓘ |
| subjectTo | drought management plans ⓘ |
| suppliesWaterFor |
agricultural irrigation
ⓘ
industrial use ⓘ municipal use ⓘ springflow-dependent ecosystems ⓘ |
| supports | drinking water supply for more than one million people ⓘ |
| threatenedBy |
overpumping
ⓘ
pollution ⓘ urban development ⓘ |
| waterQuality | generally high but vulnerable to contamination ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Edwards Aquifer Description of subject: The Edwards Aquifer is a vast karst limestone groundwater system in central Texas that serves as a primary water source for San Antonio and surrounding communities.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Edwards Aquifer
linked to: Edwards Aquifer
linked to: Edwards Aquifer
linked to: Edwards Aquifer