To generate the 50K grid:
Arc: GENERATE grid50
Fishnet origin coordinate (x,y): 150000,0
Y-axis coordinate (x,y): 150000,1
Cell size (width, height): 50000,50000
Number of rows, columns: 198,16
Use the same logic to create all five grids. For the 20K box grid, give it a coverage name such as sec-
tion20. The individual section group coverages (i.e., c2boxes, e2boxes, etc.) will be constructed later.
13. Build all of the new grids (BUILD <cover> LINE). If CLEAN is required, use a fuzzy toler-
ance of 1 (CLEAN <cover> # # 1 LINE ).
14. The new GRID50, GRID10 and GRID5 do not require any further editing. However, since
BIG and SECTION20 are sets of boxes (not grid line), the extraneous lines need to be deleted. Using
BIG as the example:
BACKCOV counties 2 (Use counties as a reference)
SELECT MANY (Select the arcs that are to be kept)
BUILD BIG LINE
For the section boxes, it is very likely that there are different groups (e.g., for the Kansas River,
UTM zone 15 had C2BOXES and E2BOXES for groups C2 and E2). Use the same steps to select and
delete the extra lines then, instead of saving and quitting, type the following:
Arcedit SELECT MANY (select arcs of the boxes of one group, i.e., C2)
Arcedit PUT <cover>
Then QUIT and BUILD (CLEAN if necessary) each of the new coverages. Note: Since the data cov-
erages had to be reprojected, BIG and the section box coverages will not appear to be in the same
place that they were when the coverages were forced into one zone since distortion has been cor-
rected. This will be especially apparent for the section boxes and it is possible that a different num-
ber of boxes may now cover the same areas along the river.
15. Copy all of the annotation coverages from the agrc/anno directory into their proper zone di-
rectories (e.g., for the Kansas River, the A2 section annotations were put into zone14, the E2 section
annotations into zone15, etc.). The annotation coverages for the new UTM zone must be reprojected
(use PROJECT) and rebuilt (use BUILD with LINE option).
16. Copy all of the AMLs from the ../kansas/agrc/aml directory into the agrc/aml directory of
the river being updated. These have been edited to deal with different UTM zones. Most of the old
AMLs can be deleted, but be sure to record what each one is referencing because some changes will