When drafting a survey, do you ever incorporate county/state/federal GIS data (Adjoining parcel lines, easements, river/streams, flood etc) into your map/plat? Of course these would be indicated as unsurveyed and the source cited.
TIA
No, but I will include lines surveyed by other surveyors and site the source survey, surveyor of record, and date signed/sealed. I do this ONLY after talking to the other surveyor and getting their authorization since I am in a non-recording state.
Yup. All the time.
For large-scale ROW surveys, it's not unusual to depict unsurveyed side lot lines per the county GIS. If we did in fact establish the line on the ground, it goes on the V-PROP layer; otherwise it's on the unsurveyed layer as noted in the legend.
Sometimes I will show unsurveyed section lines per the county GIS to make it clear where projects are located.
It's generally a good idea to use a quality GIS layer.
Edit: I should clarify that we do not make any dimensions or ties along to to these lines, and explicitly call them out as for informational/pictorial purposes only in our notes. We also do this far more for topographic/design surveys than we do for boundaries/records of survey.
Information available to me that benefits my client has been and will continue to be shown.
The first map I drafted in the early 70,s had dashed lines that weren’t annotated. The last map I draft will show similar information. I don’t need a coordinate on everything I show on a map. Especially when the footprints on the ground are hundreds if not thousands of feet apart.
GIS parcel lines will only be used for location maps.
Other line work from GIS might be used for certain things such as groundwater protection areas and FEMA flood maps since they are the source, but parcel lines, ROW's, utilities, not a chance.
I don't trust any GIS parcel line data enough even to use it as rough linework.
All the time. Well, not so much GIS or government data; the only time I really use that stuff is when I scale a FIRM panel on an ALTA. But absolutely I'll show linework from other plats and surveys and annotate it as record data.
Of course I show them, I have to plot the adjoining deeds, so I show the lines. Now they will be dashed and won't have any bearings or distances but I show the lines. The exception to the bearings and distances is if I am tied to a corner on an adjoining property.
When drafting a survey, do you ever incorporate county/state/federal GIS data (Adjoining parcel lines, easements, river/streams, flood etc) into your map/plat? Of course these would be indicated as unsurveyed and the source cited.
TIA
Plats, it happens almost every time.
Lot survey, it depends, but mostly no.
