<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
span.EmailStyle19
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-US" link="#0563C1" vlink="#954F72" style="word-wrap:break-word">
<div class="WordSection1">
<p class="MsoNormal">USGS has released new specifications for hydrography based on 3DEP lidar data:
<a href="https://pubs.usgs.gov/tm/11/b11/tm11b11.pdf"><span style="color:blue">Elevation-Derived Hydrography Acquisition Specifications (usgs.gov)</span></a>. Below is the first paragraph of the Background section:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><i>In 2013, the USGS National Geospatial Program (NGP) established the 3DEP as an interagency group to produce and distribute nationwide coverage of high-resolution elevation data (derived from lidar and interferometric
synthetic aperture radar [commonly known as IfSAR] sources) for the United States. In 2020, an effort is underway to improve the positional quality of the USGS NHD to be more closely aligned with the 1-m 3DEP DEMs, which are being derived from lidar and, in
Alaska, the 5-m DEMs, which are being derived from IfSAR. The improved integration of elevation and hydrography.<o:p></o:p></i></p>
<p class="MsoNormal"><i><o:p> </o:p></i></p>
<p class="MsoNormal">The release of this document might indicate that USGS 3DEP will solicit grant funding applications for elevation-derived hydrography updates to the NHD.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal"><b><span style="font-size:9.0pt;color:#1F497D">Jacob Edwards
<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;color:#1F497D">Oregon Lidar Consortium Coordinator<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;color:#1F497D">Oregon Department of Geology and Mineral Industries<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#1F497D">800 NE Oregon Street, Suite 965, Portland, Oregon 97232<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#1F497D">Direct: (971) 865-1073<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif"><a href="mailto:Jacob.edwards@oregon.gov"><span style="font-size:9.0pt;font-family:"Calibri",sans-serif">Jacob.edwards@oregon.gov</span></a></span><span style="font-size:9.0pt;color:#1F497D">
<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</body>
</html>