<div dir="ltr"><div>In addition to Alan's thorough answer, I'll mention that in Acton we had to do some corrections: the L3 data is pretty good, but if it doesn't line up with what you know, you may be right. We ended up looking at deeds and then asking our town's GIS department to do some resurveying of some selected bounds.<br><br></div>I see that Westford hascontracted to have a public GIS viewer, available at <a href="https://www.mapsonline.net/westfordma/index.html">https://www.mapsonline.net/westfordma/index.html</a> It has a layer for public lands, a layer for CRs, a layer for seeing Open Street Map data, and a layer for parcels. Either they might have the data you need, or, if you develop some new data, they might benefit from it. We've been in touch with our Town's GIS department to share data and corrections to it back and forth. <br></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div><span style="font-size:12.8px">Jim Snyder-Grant</span><br style="font-size:12.8px"><span style="font-size:12.8px">18 Half Moon Hill</span><br style="font-size:12.8px"><span style="font-size:12.8px">Acton MA 01720</span><br style="font-size:12.8px"><span style="font-size:12.8px">508 572-2985</span><br></div><div><br></div></div></div></div></div></div></div></div></div></div></div></div></div>
<br><div class="gmail_quote">On Wed, Dec 6, 2017 at 8:03 AM, Alan & Ruth Bragg <span dir="ltr"><<a href="mailto:alan.ruth.bragg@gmail.com" target="_blank">alan.ruth.bragg@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-family:trebuchet ms,sans-serif;font-size:large">Good question Marc. <br></div><div class="gmail_quote"><div dir="ltr"><div style="font-family:"trebuchet ms",sans-serif;font-size:large">I'm using JOSM and use the Mass GIS L3 imagery layer to see both outlines of open space and house numbers. It's available in the Imagery Preferences tab. If you're using ID you can load this layer as "custom imagery" (found under the "layer" icon)</div><div style="font-family:"trebuchet ms",sans-serif;font-size:large">You need to enter </div><div style="font-family:"trebuchet ms",sans-serif;font-size:large"><a href="http://tile.osm.osuosl.org/tiles/massgis_parcels/%7Bzoom%7D/%7Bx%7D/%7By%7D.png" target="_blank">http://tile.osm.osuosl.org/til<wbr>es/massgis_parcels/{zoom}/{x}/<wbr>{y}.png</a></div><div style="font-family:"trebuchet ms",sans-serif;font-size:large"><br></div><div style="font-family:"trebuchet ms",sans-serif;font-size:large"><br></div><div style="font-family:"trebuchet ms",sans-serif;font-size:large">The latest GIS data for all MA towns is available at </div><div style="font-family:"trebuchet ms",sans-serif;font-size:large"><br></div><div style="font-family:"trebuchet ms",sans-serif;font-size:large"><a href="http://www.mass.gov/anf/research-and-tech/it-serv-and-support/application-serv/office-of-geographic-information-massgis/datalayers/l3parcels.html" target="_blank">http://www.mass.gov/anf/resear<wbr>ch-and-tech/it-serv-and-suppor<wbr>t/application-serv/office-of-<wbr>geographic-information-<wbr>massgis/datalayers/download-<wbr>level3-parcels.html</a></div><div style="font-family:"trebuchet ms",sans-serif;font-size:large"><br></div><div style="font-family:"trebuchet ms",sans-serif"><font size="4">Look for your town in the list and download file in the "<span style="box-sizing:border-box;font-family:sans-serif;text-align:center">ESRI Shapefiles" column.</span></font></div><div style="font-family:"trebuchet ms",sans-serif"><span style="box-sizing:border-box;font-family:sans-serif;text-align:center"><font size="4">Unzip the downloaded file. There will be 9 files, open the M330TaxPar.shp file (the 330 here is Westford), there are 2 shp files, you want the one with the SHP extension, not the XLM file.</font></span></div><div style="font-family:"trebuchet ms",sans-serif"><span style="box-sizing:border-box;font-family:sans-serif;text-align:center"><font size="4"><br></font></span></div><div style="font-family:"trebuchet ms",sans-serif"><span style="box-sizing:border-box;font-family:sans-serif;text-align:center"><font size="4">This will open in a new data layer in JOSM. Be careful here and </font><b><font size="6">never</font></b><font size="4"> upload that layer to OSM. Your OSM data should be downloaded to another layer.</font></span></div><div style="font-family:"trebuchet ms",sans-serif"><span style="box-sizing:border-box;font-family:sans-serif;text-align:center"><font size="4">You can view both layers at the same time.</font></span></div><div style="font-family:"trebuchet ms",sans-serif"><span style="font-size:large;font-family:sans-serif;text-align:center"><br></span></div><div style="font-family:"trebuchet ms",sans-serif"><span style="font-size:large;font-family:sans-serif;text-align:center">Contact me if you have a problem. One of the best thing going in Massachusetts is people from trails committees taking ownership for their towns. I suggest you make your trails highway=path and add operator=(your trail committee name)</span></div><div style="font-family:"trebuchet ms",sans-serif"><span style="font-size:large;font-family:sans-serif;text-align:center"><br></span></div><div style="font-family:"trebuchet ms",sans-serif"><span style="font-size:large;font-family:sans-serif;text-align:center">There's another way to get Mass Open Space data from Oliver. Let me know if you're interested. </span></div><div style="font-family:"trebuchet ms",sans-serif"><span style="font-size:large;font-family:sans-serif;text-align:center">Alan </span><span class="HOEnZb"><font color="#888888"><br></font></span></div></div><span class="HOEnZb"><font color="#888888"><div class="gmail_extra"><br clear="all"><div><div class="m_-4259990789516993243m_-8367995649801075549gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div><font size="4" face="arial, helvetica, sans-serif">Alan</font></div></div></div></div></div></div></div>
<br><div class="gmail_quote"><div><div class="m_-4259990789516993243h5"><br></div></div></div></div></font></span></div></div>
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