Post DLG and data refinements include: a) Translation of DLG to ARC/INFO data format b) Review and correction for incompleteness and/or incorrect DLG attributes c) Internal and external (in-progress) coordinate edgematching of features along map edges d) Addition of hydrographic features as required by DWQ for stream classifications e) Addition of hydrographic attributes as identified in attribute table specifications
system filename : /library/librb layer name: hy24 files range in size from approximately 3 to 218 mb
tile filesize (mb) ---- ------------- brd 15 cho 19 cpf 250 ctb 46 fbr 41 hiw 16 lbr 90 ltn 102 neu 142 new 8 pas 56 roa 71 sav 2 tar 115 wat 4 wok 36 yad 135Use support for each basin will be updated on a 5 year schedule concurrent with the North Carolina Division of Water Quality basinwide planning schedule. Stream classification information will be updated as changes occur. The following table shows the most current stream classification update and use support update, if any has occured.
River Basin Classification Update Use Support Update ----------- --------------------- ------------------ Broad 20000801 Catawba 20000801 20000928 Chowan Cape Fear 19990401 20000928 French Broad 20000801 20000928 Hiwassee Little Tennessee 19980801 Lumber 20000801 19990901 Neuse 19980801 New 19980801 20000928 Pasquotank 20000801 Roanoke 19990401 Savannah Tar-Pamlico 19981101 Watauga White Oak Yadkin 19990401Revisions and updates to this layer include:
5.) filename: /library/librb/tiles... The April 19, 2001 update consisted of updating the SUBBASIN# value for all river basins 4.) directory: hy24rb1100 filename: hy241100(rbabbrev) The November 7, 2000 update consisted of the addition of the Broad, Catawba, Yadkin, Hiwassee, Little Tennessee and Savannah River Basins. Use support information has been updated for the Cape Fear, French Broad, New, and Catawba River Basins. Several streams have been reclassified in the Broad, Catawba, French Broad, Lumber, and Pasquotank River Basins. 303d stream segments have been updated for all applicable basins. Use support and stream classification information was provided by the North Carolina Department of Environment and Natural Resources, Division of Water Quality. 3.) directory: hy24rb600 filename: hy24600(rbabbrev) The June 15, 2000 update consisted of the addition of the French Broad, Lumber, New, Roanoke, and Watauga, River Basins as well as various edits to the Chowan, Cape Fear, Neuse, Pasquotank, Tar-Pamlico, and White Oak River Basins. 2.) directory: hy24rb300 filename: hy24rb300(rbabbrev) The March 31, 2000 update consisted of numerous feature additions and updates to feature attributes to the Chowan, Cape Fear, Neuse, Pasquotank, Tar-Pamlico, and White Oak River Basins. 1.) directory: hy24rb99 filename: (rbabbrev)hy24rb99 The December 31, 1999 version was the first version of this data and included the Chowan, Cape Fear, Neuse, Pasquotank, Tar-Pamlico, and White Oak basins.
NCCGIA Director Database Administration, Zsolt Nagy Database Management, Ken Shaffer Project Manager, Jeremy Poss North Carolina Center for Geographic Information and Analysis Governor's Office Office of State Planning 301 North Wilmington Street, Suite 700 Raleigh, NC 27601-2825 Div. of Water Quality Director, Tommy Stevens Water Quality Section Chief, Coleen Sullins Water Quality Section Staff, Darlene Kucken NC Dept. of Environment and Natural Resources 512 N. Salisbury Street, Raleigh, NC 27604-1148
HY24.pat Polygon Attribute Table COLUMN ITEM NAME WIDTH OUTPUT TYPE DEC DESCRIPTION 1 AREA 8 18 F 5 Total area in feet 9 PERIMETER 8 18 F 5 Total perimeter 17 HY24# 4 5 B - Poly internal 21 HY24-ID 4 5 B - Poly user id number 25 MAJOR1 6 6 I - USGS DLG code 31 MINOR1 6 6 I - USGS DLG code 37 MAJOR2 6 6 I - USGS DLG code 43 MINOR2 6 6 I - USGS DLG code 49 MAJOR3 6 6 I - USGS DLG code 55 MINOR3 6 6 I - USGS DLG code 61 STREAM_NAM 100 100 C - Stream name as listed in DWQ Classification Guide 161 WATERBODY 100 100 C - Waterbody name as listed in DWQ Classification Guide 261 RIV_BASIN 20 20 C - River basin name 281 SUBBASIN# 8 8 C - Corresponding subbasin number 289 DWQ_INDEX# 25 25 C - DWQ stream classification index number (ex: 9-53-1) 314 DWQ_CLASS 18 18 C - DWQ stream classification 332 DWQ_CLDATE 8 8 C - Date of stream classification 340 DESCRIP_CL 170 170 C - Description of stream classification reach 510 INDEX_305B 25 25 C - DWQ index number (ex: 9-53-1) for 305 stream reaches 535 INDEX_303D 50 50 C - DWQ index number (ex: 9-53-1_1998) for 303D stream reaches 585 USE_RATING 2 2 C - Use support rating 587 USE_BASIS 10 10 C - Rating basis, M-monitored or E-evaluated 597 USE_DATE 10 10 C - Date of use support file update 607 DESCRIP_UR 170 170 C - Description of use support reach 777 CGIA_FMS 10 10 C - Feature maintenance status 787 COMMENT 50 50 C - Supplemental information HY24.aat Arc Attribute Table COLUMN ITEM NAME WIDTH OUTPUT TYPE DEC DESCRIPTION 1 FNODE# 4 5 B - From-node id of linear feature 5 TNODE# 4 5 B - To-node id of linear feature 9 LPOLY# 4 5 B - Left-side polygon id of linear feature 13 RPOLY# 4 5 B - Right-side polygon id of linear feature 17 LENGTH 8 18 F 3 Length of linear feature in feet 25 HY24# 4 5 B - Internal id number 29 HY24-ID 4 5 B - Internal id number 33 MAJOR1 6 6 I - USGS DLG code 39 MINOR1 6 6 I - USGS DLG code 45 MAJOR2 6 6 I - USGS DLG code 51 MINOR2 6 6 I - USGS DLG code 57 MAJOR3 6 6 I - USGS DLG code 63 MINOR3 6 6 I - USGS DLG code 69 STREAM_NAM 100 100 C - Stream name as listed in DWQ Classification Guide 169 RIV_BASIN 20 20 C - River basin name 189 SUBBASIN# 8 8 C - Corresponding subbasin number 197 DWQ_INDEX# 25 25 C - DWQ stream classification index number (ex: 9-53-1) 222 DWQ_CLASS 18 18 C - DWQ stream classification 240 DWQ_CLDATE 8 8 C - Date of stream classification 248 DESCRIP_CL 170 170 C - Description of stream classification reach 418 INDEX_305B 25 25 C - DWQ index number (ex: 9-53-1) for 305 stream reaches 443 INDEX_303D 50 50 C - DWQ index number (ex: 9-53-1_1998) for 303D stream reaches 493 USE_RATING 2 2 C - Use support rating 495 USE_BASIS 10 10 C - Rating basis, M-monitored or E-evaluated 505 USE_DATE 10 10 C - Date of use support file update 515 DESCRIP_UR 170 170 C - Description of use support reach 685 USE_LENGTH 8 18 F 5 Length of use support reach in miles (estimate) 693 CL_LENGTH 8 18 F 5 Length of classification stream reach in miles (estmate) 701 CGIA_FMS 10 10 C - Feature maintenance status 711 COMMENT 50 50 C - Supplemental information HY24.nat Node Attribute Table COLUMN ITEM NAME WIDTH OUTPUT TYPE DEC DESCRIPTION 1 ARC# 4 5 B - Internal arc number of node 5 HY24# 4 5 B - Internal id number 9 HY24-ID 4 5 B - Internal id number 13 MAJOR1 6 6 I - USGS DLG code 19 MINOR1 6 6 I - USGS DLG code