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| ![]() MIL-D-89009
APPENDIX
40
DNTEXT.TFT
LEVEL
DNPOINT diacritical annotation
41
DNTEXT.TFT
SYMBOL
1
Black annotation
42
DNTEXT.TFT
SYMBOL
4
Blue annotation
TABLE 75.
Drainage area feature table (DNAREA.AFT).
{Header length};\
Drainage Areas;DNAREA.DOC;\
ID=
I,1,P,Row Identifier,-,-,:\
DNPYTYPE=I,1,N,Type of Drainage Area,INT.VDT,-,:\
TILE_ID= S,1,F,Tile Reference Identifier,-,DNAREA.ATI,:\
FAC_ID= I,1,F,Face Primitive Foreign Key,-,-,:;
1
3
22
1
2
2
67
2
:
:
:
:
n
n
n
n
DNPYTYPE
ONC Codes
1 = Inland water
- perennial
303.1
Lakes, perennial
Reservoirs, natural shorelines1
304.1
Reservoir, manmade shoreline1
304.2
Reservoirs, under construction1
304.3
305.1
Streams, perennial
305.8
Streams, unsurveyed, perennial
307.2
Canals, navigable, to scale
2
=
Inland water
- nonperennial
303.2
Lakes, nonperennial; wadi; sabkha
307.4
Canals, navigable, abandoned
305.2
Streams, nonperennial
305.6
Streams, seasonally fluctuating, wul
305.7
Streams, seasonally fluctuating, mbl
3
=
Wet sand
305.10
Sand deposits in & along riverbeds
305.11
Wet sand areas
4
=
Snowfields,
glaciers, ice
315.1
Glaciers
315.3
Snowfields, ice fields, and ice caps
315.7
Permanent polar ice
9
=
None (used for background
and for inland water islands)
Notes
When inland water bodies and rivers represented as area features are
contiguous, it is not possible to differentiate between the two features
on an ONC. Therefore all areal river features are categorized as inland
water.
1 All
reservoirs are considered perennial.
101
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