National Wilderness Inventory
Australia: Our national stories
Australian Heritage Commission, 2003
ISBN 0 642 23561 9
3. The Primary Database (continued)
3.4 Feature Codes and Grades
This section details the full set of NWI assigned feature codes used in assembling line, point and polygon features for the primary database.
All geographic features included in the primary database are coded for identification purposes. The codes generally reflect co-operating agency requirements and have thus developed progressively during the course of baseline survey work.
Where practicable, features have been distinguished with the most specific code, although full use of the code set is not required for wilderness analysis. In many cases features are grouped together under summary codes indicating the featurežs appropriate grade for wilderness analysis.
This section also details the assignment of features to grouped primary data sets required in order to run the wilderness analysis.
| Descriptor | Description | NWI Code (Cover) |
|---|---|---|
| Natural cover | a natural water body or an area of land which retains its natural cover. Where this cover is vegetated, the original structure and taxonomic composition of the native vegetation communities should be essentially intact. | 1 |
| Cultural cover (excluding built-up) |
a water body or an area of land which is essentially an artifact of modern technological society. Where this cover is vegetated, the original structure and taxonomic composition of the native vegetation communities is no longer intact. | 2 |
| Ocean | marine and estuarine area | 3 |
| Swamp | (sub-set of natural cover) | 4 |
| Salt lake | (sub-set of natural cover) | 5 |
| Built-up area | urban or suburban area | 6 |
| Dune; naturally bare area | (sub-set of natural cover) | 7 |
| Pine forest | (sub-set of natural cover) | 8 |
| Additional vegetation | natural cover: applies only to South Australian agricultural areas (sub-set of natural cover) | 9 |
| Degraded vegetation | regrowth scrub/drained areas: applies only to South Australian agricultural areas (sub-set of natural cover) | 10 |
| Lake | an essentially natural inland water-body (sub-set of natural cover) | 11 |
| Reservoir | an artificial inland water-body (sub-set of cultural cover) | 12 |
| Excluded from survey | 99 | |
| Note: Bold feature codes indicate minimum code set required for wilderness analysis | ||
| Description | NWI Code (Access) |
|---|---|
| High grade access (summary code) 2 or more lanes, sealed road 1 lane, sealed road 2 or more lanes, unsealed road |
110 111 112 113 |
| Medium grade access (summary code) 1 lane, unsealed road Landing ground, airstrip Operating railway |
120 121 122 123 |
| Low grade access (summary code) Vehicular track |
130 131 |
| Very low grade access (summary code) Walking track Cleared line Established vehicle access route (non-constructed) |
140 141 142 143 |
| Other features Closed road Disused railway Pipeline Powerline Fence Levee bank Quarry Drain Disused airfield Dams/banks |
210 220 230 240 250 260 270 280 290 22006 |
| Natural features (arid areas) Water lines (rivers, streams, etc.) Native soakage Waterholes Spring/pond River/creek Lake |
31000 31004 31005 31006 31008 31009 |
| Miscellaneous features State border Unknown |
300 999 |
| Description | NWI Code (Sites) |
|---|---|
| Cleared point (summary code) Open area (< 1 ha) Quarry (< 1 ha) Mine (< 1 ha) Abandoned mines or quarries |
10000 10100 10200 10300 10400 |
| Occupied buildings (summary code) Residential Service location, population <= 10 Service location, population > 10 & < 100 Service location, population > 100 |
21100 21101 21102 21103 21104 |
| Unoccupied buildings Ruin Lighthouse Miscellaneous building Utilities |
21201 21202 21203 21204 |
| Other structures Beacon Pump Bore Well Tank Dam/Bank Windmill Abandoned well, bore etc. Reservoir Unlabelled square water point (topo map) Yard Trig point Unlabelled round water point (topo map) Tower (e.g. telecommunications) |
22001 22002 22003 22004 22005 22006 22007 22008 22009 22010 22011 22012 22013 22014 |
| Natural features (arid areas) Native water point Native wells Native rockholes Native dam Native soakage Waterhole Spring/pond Unlabelled round water point (topo map) Lake Natural unnamed water point |
31000 31001 31002 31003 31004 31005 31006 31007 31009 31010 |
| Primary Database Layer | Layer Item | Grouped NWI Feature Codes | Grouped Coverage |
|---|---|---|---|
| Land_cov | Cover | 2, 6, 8, 12 6 |
CULTURAL BUILTUP |
| Lines | Access | 120, 121, 122, 123 130, 131 140, 141, 142, 143 230, 240 250, 260, 270, 280, 290, 22006 210, 220 |
ACC1 ACC2 ACC3 ACC4 AES1LN AES2LN AES3LN |
| Points | Sites | 21104 21103 21102 21101 21200, 21202, 21203, 21204, 22001, 22009, 22014 10100, 10200, 10300, 10400, 22000, 22002, 22003, 22004, 22005, 22006, 22007, 22010, 22011, 22013 22008, 22012 21101, 21102, 21103, 21104, 22003, 22004, 22005, 22006, 22007,22009, 22013,31000, 31004, 31005, 31010 |
ACC2PT SET1 SET2 SET3 SET4 AES1PT AES2PT AES3PT PERM-PT |