HUC codes
E855111
HUC codes are a standardized numerical system used by the U.S. Geological Survey to uniquely identify and classify watersheds and hydrologic units across the United States.
All labels observed (1)
| Label | Occurrences |
|---|---|
| HUC codes canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10316773 — 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: HUC codes Context triple: [United States Geological Survey hydrologic unit codes, alsoKnownAs, HUC codes]
-
A.
HCPCS Level II
HCPCS Level II is a standardized coding system used in the United States to identify non-physician services, supplies, and products such as durable medical equipment and ambulance services for billing and administrative purposes.
-
B.
UPC
UPC is the commonly used acronym for the Polytechnic University of Catalonia, a leading Spanish public institution specializing in engineering, architecture, and technology.
-
C.
UHC
UHC is the commonly used abbreviation for the Uttarakhand High Court, the highest judicial authority in the Indian state of Uttarakhand.
-
D.
HCU
HCU is a leading Indian public research university located in Hyderabad, known for its strong postgraduate programs and emphasis on interdisciplinary studies.
-
E.
IBC Code
The IBC Code is an international safety standard that sets design, construction, and equipment requirements for ships carrying dangerous and noxious liquid chemicals in bulk.
- 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: HUC codes Target entity description: HUC codes are a standardized numerical system used by the U.S. Geological Survey to uniquely identify and classify watersheds and hydrologic units across the United States.
-
A.
HCPCS Level II
HCPCS Level II is a standardized coding system used in the United States to identify non-physician services, supplies, and products such as durable medical equipment and ambulance services for billing and administrative purposes.
-
B.
UPC
UPC is the commonly used acronym for the Polytechnic University of Catalonia, a leading Spanish public institution specializing in engineering, architecture, and technology.
-
C.
UHC
UHC is the commonly used abbreviation for the Uttarakhand High Court, the highest judicial authority in the Indian state of Uttarakhand.
-
D.
HCU
HCU is a leading Indian public research university located in Hyderabad, known for its strong postgraduate programs and emphasis on interdisciplinary studies.
-
E.
IBC Code
The IBC Code is an international safety standard that sets design, construction, and equipment requirements for ships carrying dangerous and noxious liquid chemicals in bulk.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
classification system
ⓘ
hydrologic identifier ⓘ |
| 10-digitHUCAlsoCalled | watershed ⓘ |
| 12-digitHUCAlsoCalled | subwatershed ⓘ |
| 2-digitHUCAlsoCalled | region ⓘ |
| 4-digitHUCAlsoCalled | subregion ⓘ |
| 6-digitHUCAlsoCalled | accounting unit ⓘ |
| 8-digitHUCAlsoCalled | cataloging unit ⓘ |
| administeredWith |
USGS Water Mission Area
ⓘ
linked to:
USGS Water Resources Mission Area
|
| appliesTo |
hydrologic systems
ⓘ
surface water drainage areas ⓘ |
| definedIn | USGS hydrologic unit system ⓘ |
| expandsTo | Hydrologic Unit Code ⓘ |
| hasLevel |
10-digit HUC
ⓘ
12-digit HUC ⓘ 14-digit HUC ⓘ 16-digit HUC ⓘ 2-digit HUC ⓘ 4-digit HUC ⓘ 6-digit HUC ⓘ 8-digit HUC ⓘ |
| hasProperty |
hierarchical
ⓘ
numeric ⓘ standardized ⓘ |
| identifies |
hydrologic unit
ⓘ
subwatershed ⓘ watershed ⓘ |
| linkedTo |
National Hydrography Dataset
ⓘ
Watershed Boundary Dataset ⓘ |
| lowestCommonResolution | 12-digit HUC ⓘ |
| organizedBy |
accounting unit
ⓘ
cataloging unit ⓘ drainage basin hierarchy ⓘ hydrologic region ⓘ subregion ⓘ |
| standardizedBy | United States Geological Survey ⓘ |
| supports |
federal water programs
ⓘ
local watershed initiatives ⓘ state water programs ⓘ |
| usedBy | United States Geological Survey ⓘ |
| usedFor |
data integration
ⓘ
environmental assessment ⓘ geospatial analysis ⓘ hydrologic modeling ⓘ regulatory reporting ⓘ water resources planning ⓘ watershed management ⓘ |
| usedIn |
United States
ⓘ
linked to:
United States of America
|
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: HUC codes Description of subject: HUC codes are a standardized numerical system used by the U.S. Geological Survey to uniquely identify and classify watersheds and hydrologic units across the United States.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.