GAP Analysis Project

PAD-US Data Manual

For inclusion in PAD-US, data submissions must meet the following requirements:

Areas meet the PAD-US definition of a protected area
Basic attributes for each protected area are included
Polygons (areas), not lines

<< Back to PAD-US Data Overview: Data & Tools

Definition of a Protected Area: PAD-US is an inventory of marine and terrestrial protected areas that are defined as being:

“Dedicated to the preservation of biological diversity and to other natural (including extraction), recreation and cultural uses, managed for these purposes through legal or other effective means.”

The database was originally designed to support biodiversity assessments; however, its scope expanded in recent years to include all public and nonprofit held lands and waters. Most are public lands owned in fee; however, long-term easements, leases, agreements, Congressional (e.g. 'Wilderness Area'), Executive (e.g. 'National Monument'), and administrative designations (e.g. 'Area of Critical Environmental Concern') documented in agency management plans are also included. The PAD-US strives to be a complete inventory of lands in the public interest, compiling “best available” data provided by managing agencies and organizations.

Federal, State, and non-profit data-stewards and other stakeholders assisted the PAD-US Team with the development of current requirements and continually suggest improvements during the open review periods.

New Projects -- Please contact the PAD-US Dataset Manager (Julie Prior-Magee - jpmagee@usgs.gov) or the PAD-US Coordinator (Lisa Johnson – lisajjohnson@boisestate.edu) if you are beginning protected area data aggregation or complex analysis projects.

PAD-US Data Dictionary -- Download the PAD-US 2.1 Data Dictionary for attribute definitions.

PAD-US Blank Schema -- Download the PAD-US 2.1 blank schema for database structure, field properties, domain codes and descriptions.

Please note translation scripts and supporting documentation for the most current version of PAD-US (2.1) can be found in the ScienceBase collection for PAD-US 2.1. See Attached Files under that collection.

PAD-US Data : Use the index below to access provisional PAD-US 2.1 geodatabase domain tables and development crosswalks or search by keyword. You can also download the all tables [PDF].

GAP Status Code Assignment: To learn more about the GAP Status Code Assignment process including assumptions, criteria, and methods please access this reference document.

Table Index:
Table 1. PAD-US attributes and field properties
Table 2. Feature class reference for Combined fields in the PAD-US geodatabase
Table 3. Category domain codes and descriptions
Table 4. Agency Type domain codes and descriptions
Table 5. Agency Name domain codes and descriptions
Table 6. Agency Name to Agency Type crosswalk
Table 7. Standardized Agency Name and Type crosswalk from source data (Local Manager, Local Owner)
Table 8. Designation Type domain codes and descriptions
Table 9. Standardized Designation Type crosswalk from source data (Local Designation)
Table 10. GAP Status Code domain codes and descriptions
Table 11. IUCN Category domain and descriptions
Table 12. Categorical GAP Status Code or IUCN Category domain assignments by Designation Type
Table 13. Categorical GAP Status Code for Marine Protected Areas (MPA) by IUCN Category
Table 14. Public Access domain codes and descriptions
Table 15. Categorical Access domain assignment by Designation Type
Table 16. State Name domain codes and descriptions

Table 1. PAD-US attributes and field properties
Field Name	Field Abbreviation	Domain or Standard	Field Type	Field Length
Aggregator Source	Agg_Src	Standardized Field	Text	150
Category	Category	Category Domain	Text	12
Comments	Comments		Text	255
Date of Establishment	Date_Est	Standardized Field (yyyy)	Text	4
Designation Type	Des_Tp	Designation Type Domain and Crosswalk (Local Designation standardized)	Text	75
Easement Holder	EsmtHldr	Agency Name Domain (for NCED)	Text	250
Easement Holder Type	EHoldTyp	Owner Type Domain and Crosswalk (for NCED)	Text	50
Feature Class	FeatClass	Category Domain	Text	12
GAP Status Code	GAP_Sts	GAP Status Code Domain and Crosswalk	Text	95
GAP Status Code Date	GAPCdDt	Standardized Field (yyyy)	Text	4
GAP Status Code Source	GAPCdSrc	Standardized Field	Text	150
GIS Acres	GIS_Acres	Calculate geometry	Long Integer	n/a
GIS Source	GIS_Src	Standardized Field	Text	200
GIS Source Date	Src_Date	Standardized Field (yyyy/mm/dd)	Text	15
IUCN Category	IUCN_Cat	IUCN Category Domain and Crosswalk	Text	70
IUCN Category Date	IUCNCtDt	Standardized Field (yyyy)	Text	4
IUCN Category Source	IUCNCtSrc	Standardized Field	Text	150
Local Designation	Loc_Ds	Source Data	Text	250
Local Manager	Loc_Mang	Source Data	Text	250
Local Name	Loc_Nm	Source Data	Text	250
Local Owner	Loc_Own	Source Data	Text	250
Manager Name	Mang_Name	Agency Name Domain (Local Manager standardized)	Text	70
Manager Type	Mang_Type	Agency Type and Crosswalk	Text	50
Owner Name	Own_Name	Agency Name Domain (Local Owner standardized)	Text	70
Owner Type	Own_Type	Agency Type and Crosswalk	Text	50
Public Access	Access	Access Domain and Crosswalk	Text	20
Public Access Date	Access_Dt	Standardized Field (yyyy)	Text	4
Public Access Source	Access_Src	Standardized Field	Text	150
Source Protected Area ID	Source_PAID	Source Data, if available	Text	100
State Name	State_Nm	State Name Domain	Text	50
Unit Name	Unit_Nm	Local Name standardized	Text	250
WDPA Site Code	WDPA_Cd	Standardized Field (Assigned by UNEP-WCMC, managed by USGS)	Long Integer	n/a

Table 2. Feature class reference for Combined fields in the PAD-US geodatabase
Domain Code	Domain Description
Designation	Designation
Easement	Easement
Fee	Fee
Marine	Marine Area
Proclamation	Approved, Proclamation or Extent Boundary

Table 3. Category domain codes and descriptions
Domain Code	Domain Description
Designation	Designation
Easement	Easement
Fee	Fee
Marine	Marine Area
Other	Other
Proclamation	Approved, Proclamation or Extent Boundary
Unknown	Unknown

Table 4. Agency Type domain codes and descriptions
Domain Code	Domain Description
DESG	Designation
DIST	Regional Agency Special District
FED	Federal
JNT	Joint
LOC	Local Government
NGO	Non-Governmental Organization
PVT	Private
STAT	State
TERR	Territorial
TRIB	American Indian Lands
UNK	Unknown

Table 5. Agency Name domain codes and descriptions
Domain Code	Domain Description
ARS	Agricultural Research Service
AS	American Samoa Government
BIA	Bureau of Indian Affairs
BLM	Bureau of Land Management
BOEM	Bureau of Ocean Energy Management
BPA	Bonneville Power Administration
CITY	City Land
CNTY	County Land
DESG	Designation
DOD	Department of Defense
DOE	Department of Energy
FM	Federated States of Micronesia Government
FWS	U.S. Fish & Wildlife Service
GU	Guam Government
JNT	Joint
MH	Marshall Islands Government
MP	Mariana Islands Government
NGO	Non-Governmental Organization
NOAA	National Oceanic and Atmospheric Administration
NPS	National Park Service
NRCS	Natural Resources Conservation Service
OTHF	Other or Unknown Federal Land
OTHR	Other
OTHS	Other or Unknown State Land
PR	Puerto Rico Government
PVT	Private
PW	Palau Government
REG	Regional Agency Land
RWD	Regional Water Districts
SDC	State Department of Conservation
SDNR	State Department of Natural Resources
SDOL	State Department of Land
SFW	State Fish and Wildlife
SLB	State Land Board
SPR	State Park and Recreation
TRIB	American Indian Lands
TVA	Tennessee Valley Authority
UM	U.S. Minor Outlying Islands Government
UNK	Unknown
UNKL	Other or Unknown Local Government
USACE	Army Corps of Engineers
USBR	Bureau of Reclamation
USFS	Forest Service
VI	U.S. Virgin Islands Government

Table 6. Agency Name to Agency Type crosswalk
Agency Name Domain Code	Agency Name Description	Agency Type Domain Code	Agency Type Description
ARS	Agricultural Research Service	FED	Federal
AS	American Samoa Government	TERR	Territorial
BIA	Bureau of Indian Affairs	FED	Federal
BLM	Bureau of Land Management	FED	Federal
BOEM	Bureau of Ocean Energy Management	FED	Federal
BPA	Bonneville Power Administration	FED	Federal
CITY	City Land	LOC	Local Government
CNTY	County Land	LOC	Local Government
DESG	Designation	DESG	Designation
DOD	Department of Defense	FED	Federal
DOE	Department of Energy	FED	Federal
FM	Federated States of Micronesia Government	TERR	Territorial
FWS	U.S. Fish and Wildlife Service	FED	Federal
GU	Guam Government	TERR	Territorial
JNT	Joint Ownership	JNT	Joint
LT	Land Trust	NGO	Non-Governmental Organization
MH	Marshall Islands Government	TERR	Territorial
MP	Mariana Islands Government	TERR	Territorial
NGO	Non-Governmental Organization	NGO	Non-Governmental Organization
NOAA	National Oceanic and Atmospheric Administration	FED	Federal
NPS	National Park Service	FED	Federal
NRCS	Natural Resources Conservation Service	FED	Federal
OTHF	Other or Unknown Federal Land	FED	Federal
OTHR	Other Ownership	UNK	Unknown Land
OTHS	Other or Unknown State Land	STAT	State
PNP	Private Non-Profit	NGO	Non-Governmental Organization
PR	Puerto Rico Government	TERR	Territorial
PVT	Private	PVT	Private
PW	Palau Government	TERR	Territorial
RA	Regional Agency Land	DIST	Regional Agency Special District
RWD	Regional Water Districts	DIST	Regional Agency Special District
SDC	State Department of Conservation	STAT	State
SDNR	State Department of Natural Resources	STAT	State
SDOL	State Department of Land	STAT	State
SFW	State Fish and Wildlife	STAT	State
SLB	State Land Board	STAT	State
SPR	State Park & Recreation	STAT	State
TRIB	American Indian Lands	TRIB	American Indian Lands
TVA	Tennessee Valley Authority	FED	Federal
UM	U.S. Minor Outlying Islands Government	TERR	Territorial
UNK	Unknown	UNK	Unknown Land
UNKL	Unknown Local Government	LOC	Local Government
USACE	Army Corp of Engineers	FED	Federal
USBR	Bureau of Reclamation	FED	Federal
USFS	Forest Service	FED	Federal
VI	U.S. Virgin Islands Government	TERR	Territorial

Table 7. Standardized Agency Name and Type crosswalk from source data (Local Manager, Local Owner)
^{(showing 50 of 21,426 - view complete table [PDF])}
Agency Type Domain Code	Agency Name Domain Code	Agency Name Description	Local Agency
FED	ARS	Agricultural Research Service	Agricultural Research Service (ARS)
FED	ARS	Agricultural Research Service	U.S. Department of Agriculture
FED	ARS	Agricultural Research Service	U.S. Department of Agriculture – Farm Service Agency
TRIB	TRIB	American Indian Lands
TRIB	TRIB	American Indian Lands	Ancestral Lands Commission
TRIB	TRIB	American Indian Lands	Bureau of Indian Affairs
TRIB	TRIB	American Indian Lands	Burns Paiute Tribe
TRIB	TRIB	American Indian Lands	Cheroenhaka Indian Tribal Heritage Foundation
TRIB	TRIB	American Indian Lands	Chickasaw Nation
TRIB	TRIB	American Indian Lands	Coeur D’ Alene Tribe
TRIB	TRIB	American Indian Lands	Confederated Salish & Kootenai Tribes
TRIB	TRIB	American Indian Lands	Confederated Salish and Kootenai Tribes
TRIB	TRIB	American Indian Lands	Confederated Tribes of Grand Ronde
TRIB	TRIB	American Indian Lands	Confederated Tribes of Warm Springs
TRIB	TRIB	American Indian Lands	Mattaponi Indian Reservation
TRIB	TRIB	American Indian Lands	Mattaponi Tribe
TRIB	TRIB	American Indian Lands	New York State
TRIB	TRIB	American Indian Lands	Nez Perce Tribe
TRIB	TRIB	American Indian Lands	Nisqually Indian Tribe
TRIB	TRIB	American Indian Lands	Pamunkey Tribe
TRIB	TRIB	American Indian Lands	Poarch Band of Creek Indians
TRIB	TRIB	American Indian Lands	Schagticoke Tribe
TRIB	TRIB	American Indian Lands	Seneca Nation Of Indians
TRIB	TRIB	American Indian Lands	Skokomish Indian Tribe
TRIB	TRIB	American Indian Lands	Skokomish Tribe
TRIB	TRIB	American Indian Lands	TRIB
TRIB	TRIB	American Indian Lands	Tribal
TRIB	TRIB	American Indian Lands	TRIBAL NATION
TRIB	TRIB	American Indian Lands	Turtle Mountain Band of Chippewa Indians
TRIB	TRIB	American Indian Lands	Unknown
TRIB	TRIB	American Indian Lands	Wind River Reservation
TERR	TRIB	American Indian Lands	TRIB
STAT	TRIB	American Indian Lands	Pamunkey Tribe
PVT	TRIB	American Indian Lands	Pamunkey Tribe
FED	USACE	Army Corps of Engineers	Albuquerque District
FED	USACE	Army Corps of Engineers	Army Corps of Engineers
FED	USACE	Army Corps of Engineers	Baltimore
FED	USACE	Army Corps of Engineers	Baltimore District
FED	USACE	Army Corps of Engineers	Buffalo District
FED	USACE	Army Corps of Engineers	Fort Worth
FED	USACE	Army Corps of Engineers	Fort Worth District
FED	USACE	Army Corps of Engineers	Forth Worth
FED	USACE	Army Corps of Engineers	Galveston District
FED	USACE	Army Corps of Engineers	Huntington
FED	USACE	Army Corps of Engineers	Huntington District
FED	USACE	Army Corps of Engineers	Jacksonville District
FED	USACE	Army Corps of Engineers	Kansas City
FED	USACE	Army Corps of Engineers	Kansas City District
FED	USACE	Army Corps of Engineers	Little Rock
FED	USACE	Army Corps of Engineers	Little Rock District
FED	USACE	Army Corps of Engineers	Los Angeles District

Table 8. Designation Type domain codes and descriptions
Domain Code	Domain Description
ACC	Access Area
ACEC	Area of Critical Environmental Concern
AGRE	Agricultural Easement
CONE	Conservation Easement
FORE	Forest Stewardship Easement
FOTH	Federal Other or Unknown Designation
HCA	Historic or Cultural Area
HCAE	Historic or Cultural Easement
IRA	Inventoried Roadless Area
LCA	Local Conservation Area
LHCA	Local Historic or Cultural Area
LOTH	Local Other or Unknown
LP	Local Park
LREC	Local Recreation Area
LRMA	Local Resource Management Area
MIL	Military Land
MIT	Mitigation Land or Bank
MPA	Marine Protected Area
NCA	Conservation Area
ND	Not Designated
NF	National Forest
NG	National Grassland
NLS	National Lakeshore or Seashore
NM	National Monument
NP	National Park
NRA	National Recreation Area
NSBV	National Scenic, Botanical or Volcanic Area
NT	National Scenic or Historic Trail
NWR	National Wildlife Refuge
OCS	Outer Continental Shelf Area
OTHE	Other Easement
PAGR	Private Agricultural
PCON	Private Conservation
PFOR	Private Forest Stewardship
PHCA	Private Historic or Cultural
POTH	Private Other or Unknown
PPRK	Private Park
PRAN	Private Ranch
PREC	Private Recreation or Education
PROC	Approved or Proclamation Boundary
PUB	National Public Lands
RANE	Ranch Easement
REA	Research or Educational Area
REC	Recreation Management Area
RECE	Recreation or Education Easement
RMA	Resource Management Area
RNA	Research Natural Area
SCA	State Conservation Area
SDA	Special Designation Area
SHCA	State Historic or Cultural Area
SOTH	State Other or Unknown
SP	State Park
SREC	State Recreation Area
SRMA	State Resource Management Area
SW	State Wilderness
TRIBL	Native American Land Area
UNK	Unknown
UNKE	Unknown Easement
WA	Wilderness Area
WPA	Watershed Protection Area
WSA	Wilderness Study Area
WSR	Wild and Scenic River

Table 9. Standardized Designation Type crosswalk from source data (Local Designation)
^{(showing 50 of 2,639 - view complete table [PDF])}
Domain Code	Designation Type Description	Local Designation Type Description
ACC	Access Area	Access Point
ACC	Access Area	BOAT
ACC	Access Area	Boat Landing
ACC	Access Area	Boat Ramp
ACC	Access Area	BOYD CREEK LANDING
ACC	Access Area	Hunter Access
ACC	Access Area	JIMMY MEETZE LANDING
ACC	Access Area	Public Boat Ramp
ACC	Access Area	Trails
ACEC	Area of Critical Environmental Concern	Important Bird Area
ACEC	Area of Critical Environmental Concern	Outstanding Natural Area
ACEC	Area of Critical Environmental Concern	Research Natural Area
ACEC	Area of Critical Environmental Concern	Wilderness Study Area
ACEC	Area of Critical Environmental Concern
AGRE	Agricultural Easement	ACEP-ALE
AGRE	Agricultural Easement	FARM
AGRE	Agricultural Easement	FRPP
CONE	Conservation Easement	ACEP-WRE
CONE	Conservation Easement	Conservation Easement
CONE	Conservation Easement	CONSERVATION EASEMENT
CONE	Conservation Easement	Easement
CONE	Conservation Easement	ENV
CONE	Conservation Easement	Environmental System
CONE	Conservation Easement	EWPP-FPE
CONE	Conservation Easement	EWRP
CONE	Conservation Easement	FSA
CONE	Conservation Easement	GRP
CONE	Conservation Easement	Metro/Regional Park
CONE	Conservation Easement	National Lakeshore
CONE	Conservation Easement	National Monument
CONE	Conservation Easement	National Park
CONE	Conservation Easement	National Preserve
CONE	Conservation Easement	National River
CONE	Conservation Easement	National Scenic Riverway
CONE	Conservation Easement	National Seashore
CONE	Conservation Easement	NWR
CONE	Conservation Easement	Privately-owned open space or common area
CONE	Conservation Easement	Trail
CONE	Conservation Easement	WMA
CONE	Conservation Easement	WPA
CONE	Conservation Easement	WRP
FORE	Forest Stewardship Easement	FOR
FORE	Forest Stewardship Easement	HFRP
FOTH	Federal Other or Unknown	Administration Site
FOTH	Federal Other or Unknown	Alaska State Selection
FOTH	Federal Other or Unknown	AS
FOTH	Federal Other or Unknown	Bureau of Reclamation (BOR)
FOTH	Federal Other or Unknown	Bureau of Reclamation Land
FOTH	Federal Other or Unknown	Cercla Site
FOTH	Federal Other or Unknown	Data Not Available

Table 10. GAP Status Code domain codes and descriptions

1	1 – managed for biodiversity – disturbance events proceed or are mimicked
2	2 – managed for biodiversity – disturbance events suppressed
3	3 – managed for multiple uses – subject to extractive (e.g. mining or logging) or OHV use
4	4 – no known mandate for biodiversity protection

Table 11. IUCN Category domain and descriptions
Domain Code	Domain Descriptions
Ia	Ia: Strict nature reserves
Ib	Ib: Wilderness areas
II	II: National park
III	III: Natural monument or feature
IV	IV: Habitat / species management
Other Conservation Area	Other Conservation Area
Unassigned	Unassigned
V	V: Protected landscape / seascape
VI	VI: Protected area with sustainable use of natural resources

Table 12. Categorical GAP Status Code or IUCN Category domain assignments by Designation Type
Default GAP Status Code			Default IUCN Category
Des_TP Code	Designation Type Description	GAP Default	If GAP 1 or 2	If GAP 3	If GAP 4
ACC	Access Area	4	V	Other Conservation Area	Unassigned
ACEC	Area of Critical Environmental Concern	3	V	Other Conservation Area	Unassigned
AGRE	Agricultural Easement	4	VI	Other Conservation Area	Unassigned
CONE	Conservation Easement	2	V	Other Conservation Area	Unassigned
FORE	Forest Stewardship Easement	3	VI	Other Conservation Area	Unassigned
FOTH	Federal Other or Unknown Designation	4	V	Other Conservation Area	Unassigned
HCA	Historic or Cultural Area	4	< 5,000 acres III	Other Conservation Area	Unassigned
HCA	Historic or Cultural Area	4	> 5,000 acres V	Other Conservation Area	Unassigned
HCAE	Historic or Cultural Easement	4	> 5,000 acres V	Other Conservation Area	Unassigned
HCAE	Historic or Cultural Easement	4	< 5,000 acres III	Other Conservation Area	Unassigned
IRA	Inventoried Roadless Area	3	1b	Other Conservation Area	Unassigned
LCA	Local Conservation Area	2	V	Other Conservation Area	Unassigned
LHCA	Local Historic or Cultural Area	4	> 5,000 acres V	Other Conservation Area	Unassigned
LHCA	Local Historic or Cultural Area	4	< 5,000 acres III	Other Conservation Area	Unassigned
LOTH	Local Other or Unknown	4	Unassigned	Other Conservation Area	Unassigned
LP	Local Park	4	> 5,000 acres V	Other Conservation Area	Unassigned
LP	Local Park	4	< 5,000 acres III	Other Conservation Area	Unassigned
LREC	Local Recreation Area	4	V	Other Conservation Area	Unassigned
LRMA	Local Resource Management Area	3	VI	Other Conservation Area	Unassigned
MIL	Military Land	4	V	Other Conservation Area	Unassigned
MIT	Mitigation Land or Bank	3	IV	Other Conservation Area	Unassigned
MPA	Marine Protected Area	See MPA Classification	See MPA Classification	Other Conservation Area	Unassigned
NCA	Conservation Area	2	V	Other Conservation Area	Unassigned
ND	Not Designated	4	Unassigned	Unassigned	Unassigned
NF	National Forest	3	VI	Other Conservation Area	Unassigned
NG	National Grassland	3	VI	Other Conservation Area	Unassigned
NLS	National Lakeshore or Seashore	3	V	Other Conservation Area	Unassigned
NM	National Monument	2	< 5,000 acres III	Other Conservation Area	Unassigned
NM	National Monument	2	> 5,000 acres V	Other Conservation Area	Unassigned
NP	National Park	2	II	Other Conservation Area	Unassigned
NRA	National Recreation Area	3	V	Other Conservation Area	Unassigned
NSBV	National Scenic, Botanical or Volcanic Area	3	< 5,000 acres III	Other Conservation Area	Unassigned
NSBV	National Scenic, Botanical or Volcanic Area	3	> 5,000 acres V	Other Conservation Area	Unassigned
NT	National Scenic or Historic Trail	3	V	Other Conservation Area	Unassigned
NWR	National Wildlife Refuge	2	IV	Other Conservation Area	Unassigned
OCS	Outer Continental Shelf Areas	3	V	Other Conservation Area	Unassigned
OTHE	Other Easement	4	Unassigned	Other Conservation Area	Unassigned
PAGR	Private Agricultural	4	VI	Other Conservation Area	Unassigned
PCON	Private Conservation	2	V	Other Conservation Area	Unassigned
PFOR	Private Forest Stewardship	3	VI	Other Conservation Area	Unassigned
PHCA	Private Historic or Cultural	4	> 5,000 acres V	Other Conservation Area	Unassigned
PHCA	Private Historic or Cultural	4	< 5,000 acres III	Other Conservation Area	Unassigned
POTH	Private Other or Unknown	4	Unassigned	Other Conservation Area	Unassigned
PPRK	Private Park	4	> 5,000 acres V	Other Conservation Area	Unassigned
PPRK	Private Park	4	< 5,000 acres III	Other Conservation Area	Unassigned
PRAN	Private Ranch	3	VI	Other Conservation Area	Unassigned
PREC	Private Recreation or Education	4	V	Other Conservation Area	Unassigned
PROC	Approved or Proclamation Boundary	4	VI	Other Conservation Area	Unassigned
PUB	National Public Lands	3	VI	Other Conservation Area	Unassigned
RANE	Ranch Easement	3	VI	Other Conservation Area	Unassigned
REA	Research or Educational Area	3	< 5,000 acres III	Other Conservation Area	Unassigned
REA	Research or Educational Area	3	> 5,000 acres V	Other Conservation Area	Unassigned
REC	Recreation Management Area	4	V	Other Conservation Area	Unassigned
RECE	Recreation or Education Easement	4	V	Other Conservation Area	Unassigned
RMA	Resource Management Area	3	VI	Other Conservation Area	Unassigned
RNA	Research Natural Area	2	1a	Other Conservation Area	Unassigned
SCA	State Conservation Area	2	V	Other Conservation Area	Unassigned
SDA	Special Designation Area	3	< 5,000 acres III	Other Conservation Area	Unassigned
SDA	Special Designation Area	3	> 5,000 acres V	Other Conservation Area	Unassigned
SHCA	State Historic or Cultural Area	4	> 5,000 acres V	Other Conservation Area	Unassigned
SHCA	State Historic or Cultural Area	4	< 5,000 acres III	Other Conservation Area	Unassigned
SOTH	State Other or Unknown	4	Unassigned	Other Conservation Area	Unassigned
SP	State Park	4	> 5,000 acres V	Other Conservation Area	Unassigned
SP	State Park	4	< 5,000 acres III	Other Conservation Area	Unassigned
SREC	State Recreation Area	4	V	Other Conservation Area	Unassigned
SRMA	State Resource Management Area	3	VI	Other Conservation Area	Unassigned
SW	State Wilderness	2	1b	Other Conservation Area	Unassigned
TRIBL	Native American Land	4	V	Other Conservation Area	Unassigned
UNK	Unknown	4	Unassigned	Other Conservation Area	Unassigned
UNKE	Unknown Easement	4	Unassigned	Other Conservation Area	Unassigned
WA	Wilderness Area	1	1b	Other Conservation Area	Unassigned
WPA	Watershed Protection Area	3	V	Other Conservation Area	Unassigned
WSA	Wilderness Study Area	2	1b	Other Conservation Area	Unassigned
WSR	Wild and Scenic River	2	V	Other Conservation Area	Unassigned

Table 13. Categorical GAP Status Code for Marine Protected Areas (MPA) by IUCN Category
IUCN Category (Assigned by NOAA)	GAP Status Assignment
1a: Strict nature reserves	GAP 1
Ib: Wilderness areas	GAP 1
II: National park	GAP 2
III: Natural monument or feature	GAP 2
IV: Habitat / species management	GAP 2
None	GAP 4
Other Conservation Area	GAP 3
V: Protected landscape / seascape	GAP 2

Table 14. Public Access domain codes and descriptions
Domain Code	Domain Descriptions
OA	Open Access
RA	Restricted Access
UK	Unknown
XA	Closed

Table 15. Categorical Access domain assignment by Designation Type
Domain Code	Domain Descriptions	Default Access Domain	Default Access Domain Description
ACC	Access Area	OA	Open Access
ACEC	Area of Critical Environmental Concern	OA	Open Access
AGRE	Agricultural Easement	XA	Closed
CONE	Conservation Easement	XA	Closed
FORE	Forest Stewardship Easement	XA	Closed
FOTH	Federal Other or Unknown Designation	UK	Unknown
HCA	Historic or Cultural Area	RA	Restricted Access
HCAE	Historic or Cultural Easement	XA	Closed
IRA	Inventoried Roadless Area	OA	Open Access
LCA	Local Conservation Area	RA	Restricted Access
LHCA	Local Historic or Cultural Area	OA	Open Access
LOTH	Local Other	UK	Unknown
LP	Local Park	OA	Open Access
LREC	Local Recreation Area	OA	Open Access
LRMA	Local Resource Management Area	OA	Open Access
MIL	Military Land	XA	Closed
MIT	Mitigation Land or Bank	XA	Closed
MPA	Marine Protected Area	OA	Open Access
NCA	Conservation Area	OA	Open Access
ND	Not Designated	UK	Unknown
NF	National Forest	OA	Open Access
NG	National Grassland	OA	Open Access
NLS	National Lakeshore or Seashore	OA	Open Access
NM	National Monument	OA	Open Access
NP	National Park	OA	Open Access
NRA	National Recreation Area	OA	Open Access
NSBV	National Scenic, Botanical or Volcanic Area	RA	Restricted Access
NT	National Scenic or Historic Trail	OA	Open Access
NWR	National Wildlife Refuge	RA	Restricted Access
OCS	Outer Continental Shelf Areas	OA	Open Access
OTHE	Other Easement	XA	Closed
PAGR	Private Agricultural	XA	Closed
PCON	Private Conservation	XA	Closed
PFOR	Private Forest Stewardship	XA	Closed
PHCA	Private Historic or Cultural	XA	Closed
POTH	Private Other or Unknown	XA	Closed
POTH	Private Other or Unknown	XA	Closed
PPRK	Private Park	XA	Closed
PRAN	Private Ranch	XA	Closed
PREC	Private Recreation or Education	XA	Closed
PROC	Approved or Proclamation Boundary	UK	Unknown
PUB	National Public Lands	OA	Open Access
RANE	Ranch Easement	XA	Closed
REA	Research or Educational Area	RA	Restricted Access
REC	Recreation Management Area	OA	Open Access
RECE	Recreation or Education Easement	XA	Closed
RMA	Resource Management Area	OA	Open Access
RNA	Research Natural Area	RA	Restricted Access
SCA	State Conservation Area	RA	Restricted Access
SDA	Special Designation Area	RA	Restricted Access
SHCA	State Historic or Cultural Area	OA	Open Access
SOTH	State Other	UK	Unknown
SP	State Park	OA	Open Access
SREC	State Recreation Area	OA	Open Access
SRMA	State Resource Management Area	OA	Open Access
SW	State Wilderness	RA	Restricted Access
TRIBL	Native American Land	UK	Unknown
UNK	Unknown	UK	Unknown
UNKE	Unknown Easement	XA	Closed
WA	Wilderness Area	RA	Restricted Access
WPA	Watershed Protection Area	XA	Closed
WSA	Wilderness Study Area	RA	Restricted Access
WSR	Wild and Scenic River	OA	Open Access

Table 16. State Name domain codes and descriptions
Domain Code	Domain Description
AK	Alaska
AL	Alabama
AR	Arkansas
AS	American Samoa
AZ	Arizona
CA	California
CO	Colorado
CT	Connecticut
DC	District of Columbia
DE	Delaware
FL	Florida
FM	Federated States of Micronesia
GA	Georgia
GU	Guam
HI	Hawaii
IA	Iowa
ID	Idaho
IL	Illinois
IN	Indiana
KS	Kansas
KY	Kentucky
LA	Louisiana
MA	Massachusetts
MD	Maryland
ME	Maine
MH	Marshall Islands
MI	Michigan
MN	Minnesota
MO	Missouri
MP	Northern Mariana Islands
MP	Mariana Islands
MS	Mississippi
MT	Montana
NC	North Carolina
ND	North Dakota
NE	Nebraska
NH	New Hampshire
NJ	New Jersey
NM	New Mexico
NV	Nevada
NY	New York
OH	Ohio
OK	Oklahoma
OR	Oregon
PA	Pennsylvania
PR	Puerto Rico
PW	Palau
RI	Rhode Island
SC	South Carolina
SD	South Dakota
TN	Tennessee
TX	Texas
UM	U.S. Minor Outlying Islands
UNKF	Unknown Federal
UT	Utah
VA	Virginia
VI	U.S. Virgin Islands
VT	Vermont
WA	Washington
WI	Wisconsin
WV	West Virginia
WY	Wyoming

GAP Analysis Project

PAD-US Data Manual

Table 1. PAD-US attributes and field properties

Table 2. Feature class reference for Combined fields in the PAD-US geodatabase

Table 3. Category domain codes and descriptions

Table 4. Agency Type domain codes and descriptions

Table 5. Agency Name domain codes and descriptions

Table 6. Agency Name to Agency Type crosswalk

Table 7. Standardized Agency Name and Type crosswalk from source data (Local Manager, Local Owner)

Table 8. Designation Type domain codes and descriptions

Table 9. Standardized Designation Type crosswalk from source data (Local Designation)

Table 10. GAP Status Code domain codes and descriptions

Table 11. IUCN Category domain and descriptions

Table 12. Categorical GAP Status Code or IUCN Category domain assignments by Designation Type

Table 13. Categorical GAP Status Code for Marine Protected Areas (MPA) by IUCN Category

Table 14. Public Access domain codes and descriptions

Table 15. Categorical Access domain assignment by Designation Type

Table 16. State Name domain codes and descriptions

Contacts

PAD-US Team