|
|
| GeoCommunity Mailing List |
| |
| Mailing List Archives |
| Subject: | [gislist] USGS Topos - Blue Line Stream Designations |
| Date: |
05/29/2007 05:58:37 PM |
| From: |
A'Hearn, William |
|
|
Does anyone know what is (was?) the criteria used by USGS to delineate a "B=
LUE-LINE" stream on USGS topo maps? We have searched through USGS's websit=
e and Googled it to no avail. =
Thanks in advance,
-- Bill A'Hearn =
=A0
=D8 =D8 =D8 =D8 =D8 =D8 =D8 =D8 =D8 =D8 =D8
=A0
Bill A'Hearn, LSIT =
GIS Analyst/Mapping Specialist
PW Engineering
Mapping & GIS Services =
City of Glendale, CA
wahearn@ci.glendale.ca.us
=A0
Latitude: 34=BA 8' 48"N - Longitude: 118=BA 14' 49"W - Elev: 565'
=A0
=D8 =D8 =D8 =D8 =D8 =D8 =D8 =D8 =D8 =D8 =D8
=A0
"The good cartographer is both a scientist and an artist.=A0 He must have a=
thorough knowledge of his subject and model, the Earth.... He must have th=
e ability to generalize intelligently and to make a right selection of the =
features to show. These are represented by means of lines or colors: and th=
e effective use of lines or colors requires more than knowledge of the subj=
ect - it requires artistic judgment."=A0=A0 Erwin Josephus Raisz (1893-1968=
)=A0
_______________________________________________
gislist mailing list
gislist@lists.geocomm.com
http://lists.geocomm.com/mailman/listinfo/gislist
_________________________________
This list is brought to you by
The GeoCommunity
http://www.geocomm.com/
|
|
Sponsored by:
For information
regarding
advertising rates
Click Here!
|
