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<!--#include virtual="/includes/header-eng.html" -->
<!-- MainContentStart -->
<aside class="prm-flpr">
<div class="container">
<div class="row">
<h2 class="wb-inv">Avadepth</h2>
<div class="wb-tabs carousel-s2 show-thumbs playing">
<ul role="tablist">
<li class="active">
<a href="#tab1"><img src="/images/banners/fraser_port.png" alt=""><span class="wb-inv">Tab 1: Avadepth - forecasts of available water depths for vessels navigating the Fraser River South Arm Channel.</span></a>
</li>
<li>
<a href="#tab2"><img src="/images/banners/frpa.png" alt=""><span class="wb-inv">Tab 2: Avadepth - is distributed weekly to river pilots, Port of Vancouver, and shipping companies to assist them in determining the maximum draft and the best sailing times to transit the Fraser River.</span></a>
</li>
<li>
<a href="#tab3"><img src="/images/banners/pwgsc_profiler_ii.png" alt=""><span class="wb-inv">Tab 3: The computerized reporting system predicts draft availability and the corresponding "transit window" for deep sea ships to navigate the South Arm Main Channel of the Fraser River between Sand Heads (kilometre 0) and Fraser Surrey Docks (kilometre 34).</span></a>
</li>
</ul>
<div class="tabpanels">
<div role="tabpanel" id="tab1" class="in fade carasoul-tab">
<div class="carasoul-image">
<img src="/images/banners/fraser_port.png" alt="">
</div>
<div class="carasoul-text">
<p>Avadepth - Forecasts of available water depths for vessels navigating the Fraser River South Arm Channel.</p>
</div>
</div>
<div role="tabpanel" id="tab2" class="out fade carasoul-tab">
<div class="carasoul-image">
<img src="/images/banners/frpa.png" alt="">
</div>
<div class="carasoul-text">
<p>Avadepth - is distributed weekly to river pilots, Port of Vancouver, and shipping companies to assist them in determining the maximum draft and the best sailing times to transit the Fraser River.</p>
</div>
</div>
<div role="tabpanel" id="tab3" class="out fade carasoul-tab">
<div class="carasoul-image">
<img src="/images/banners/pwgsc_profiler_ii.png" alt="">
</div>
<div class="carasoul-text">
<p>The computerized reporting system predicts draft availability and the corresponding "transit window" for deep sea ships to navigate the South Arm Main Channel of the Fraser River between Sand Heads (kilometre 0) and Fraser Surrey Docks (kilometre 34).</p>
</div>
</div>
</div>
</div>
</div>
</div>
</aside>
<div class="container">
<h1 property="name" id="wb-cont" class="wb-inv">Welcome to Avadepth</h1>
<section>
<div class="row">
<div class="col-md-12">
<h2 class="h1">Welcome to Avadepth</h2>
<p class="pagetag">Avadepth - a reporting system designed to assist mariners and commercial shipping in calculating their maximum available draft and best sailing times to safely navigate the Fraser River South Arm Channel between Sand Heads (kilometre 0) and Fraser Surrey Docks (kilometre 34).</p>
</div>
</div>
</section>
</div>
<aside class="gc-nttvs container">
<h2>Avadepth Reports</h2>
<div class="wb-eqht row">
<section class="col-lg-6 col-md-6 col-sm-12 gc-drmt">
<h3 class="h5"><a href="/Data/weekly/weekly.pdf?" target="_blank">CCG Weekly Report</a></h3>
<p>An eight day forecast of available water depths for the Fraser River South Arm Navigation Channel; this report is published every Friday for the coming week by the Canadian Coast Guard, Western Region, Aids to Navigation – Waterways Management.</p><p>See "<a href="/theory-theorie-eng.html">Background & Theory of Operation</a>" for addition information.</p>
</section>
<section class="col-lg-6 col-md-6 col-sm-12 gc-drmt">
<h3 class="h5"><a href="/avdpth_srch-eng.html?page=tw">Transit Window</a></h3>
<p>Displays the available "transit window" for a selected period (day/week/month) using two approaches: by specifying a required "<i>depth</i>" for transit, or by specifying a required "<i>transit window</i>" to reach the destination.</p>
<p>User defined variables are selected from the Parameters drop-down menu.</p>
</section>
<section class="col-lg-6 col-md-6 col-sm-12 gc-drmt">
<h3 class="h5"><a href="/avdpth_srch-eng.html?page=dd">Daily Depths</a></h3>
<p>Graphs the available water depths for a selected date; and identifies the location and depth of the critical control point.</p>
<p>User defined variables are selected from the Parameters drop-down menu.</p>
</section>
<!-- <div class="clearfix visible-md"></div> -->
<section class="col-lg-6 col-md-6 col-sm-12 gc-drmt">
<h3 class="h5"><a href="/avdpth_srch-eng.html?page=frh">Fraser River Hydrograph</a></h3>
<p>Illustrates the seasonal flow conditions for the Lower Fraser River; and will aid the user in selecting the appropriate river discharge when calculating the available water depths. The historical flow conditions represent approximately 100 years of recorded data from Water Survey of Canada, Real-Time Hydrometric Station for the Fraser River at Hope, BC.</p>
</section>
<!-- <div class="clearfix visible-lg"></div> -->
<section class="col-lg-12 col-md-12 col-sm-12 gc-drmt">
<h3 class="h5"><a href="/avdpth_srch-eng.html?page=pwl">Predicted Water Levels & Velocities</a></h3>
<p>Displays pre-generated water levels and velocities from a one-dimensional hydrodynamic model, and represents an average water level and velocity for each cross-section defined in the model. Model computations were on a 10 minute time interval and simulated nine different river flow / discharge scenarios.</p>
<p>User defined variables are selected from the Parameters drop-down menu.</p>
</section>
<div class="clearfix visible-md"></div>
<section class="col-lg-12 col-md-12 col-sm-12 gc-drmt">
<h3 class="h5"><a href="/avdpth_srch-eng.html?page=acv">Animated Currents</a></h3>
<p>Displays pre-generated currents from a two-dimensional hydrodynamic model of the Fraser - South Arm Channel. The model values represent a depth average flow condition through the water column at pre-defined x & y nodes; thus allowing users to assess if flow conditions are strong, moderate, or weak and in which direction. As a note, users need to be aware that during periods of low river flow, fresh water may flow over the salt water at depth and create stratified conditions; for this reason, comparing model predicted values to either the surface currents or the currents measured at depth with an acoustic current metre may show significant differences.</p>
<p>However, since the large deep vessels navigating the river channel experience currents throughout much of the water column, the depth-averaged currents should provide a reasonable indication of overall current-induced effects on the vessel.</p>
<p>User defined variables are selected from the Parameters drop-down menu.</p>
</section>
</div>
</aside>
<br>
<aside class="gc-nttvs container">
<h2>Channel Bottom Conditions</h2>
<div class="wb-eqht row">
<section class="col-lg-6 col-md-6 col-sm-12 gc-drmt">
<h3 class="h5"><a href="/avdpth_srch-eng.html?page=ccc">Fraser River – South Arm Channel Condition Report</a></h3>
<p>A weekly printout of channel bottom conditions for the Fraser River Deep Sea Navigation Channel.</p>
<h3 class="h5"><a href="/Data/overview/FSD_Overview.pdf?" target="_blank">Fraser Surrey Docks – Berth Soundings</a></h3>
<p>A composite drawing that incorporates the most recent surveys of the berths and approach channels to Fraser Surrey Docks. </p>
<h3 class="h5"><a href="/Data/overview/FR_Overview_S.dwf?" target="_blank">Fraser River – South Arm Channel Overview</a></h3>
<p>A composite of the most current soundings / surveys of the main navigation channel from Sand Heads (km -1.0) to New Westminster (km 35.0).</p>
</section>
<section class="col-lg-6 col-md-6 col-sm-12 gc-drmt">
<h3 class="h5"><a href="/avdpth_srch-eng.html?page=sdb" target="_blank">Survey Drawings</a></h3>
<p>Users have access to drawings and survey field sheets of main commercial
channels monitored by the Canadian Coast Guard, Waterways Management. Users
will need to install an Autodesk DWF viewer to display and view the
survey drawings.</p>
<p style="width: 100%; text-align: center;"><a href="https://www.autodesk.com/products/design-review/download">Download Autodesk Viewer</a></p>
<h3 class="h5"><a href="/Data/bMIO/FR_bMIO.zip">Download – bMIO for the Fraser River South Arm Shipping Channel</a></h3>
<p>This bathymetric Marine Information Overlay (bMIO) is an Electronic Nautical
Chart (ENC) of recent soundings that are to be displayed in conjunction with
Canadian Hydrographic Service (CHS) Chart 3490. The overlay displays additional
depth information regarding available depths that have resulted from maintenance
dredging or from sedimentation during the "spring run-off"; a period when
channel depths change rapidly due to river flow conditions.</p>
</section>
</div>
</aside>
<br>
<aside class="gc-nttvs container">
<h2>Channel Bathymetry Analysis</h2>
<div class="wb-eqht row">
<section class="col-lg-6 col-md-6 col-sm-12 gc-drmt">
<h3 class="h5"><a href="/avdpth_srch-eng.html?page=cbw">Channel Bathymetry Webmap</a></h3>
<p>A bathymetry model of current channel bottom conditions on the Fraser River,
South Arm available in two design parameters: (1) available depths relative to
Low Low Water Level (LLWL) and (2) depth contours relative to channel grade for
a vessel with a 11.5 m draft.</p>
</section>
<section class="col-lg-6 col-md-6 col-sm-12 gc-drmt">
<h3 class="h5"><a href="/avdpth_srch-eng.html?page=isa">Channel Infill & Scour Analysis</a></h3>
<p>Time series analysis of channel infill and scour illustrating how dynamic the
river bottom can be during freshet. Users will need to have Adobe Reader to
display and view these images.</p>
</section>
</div>
</aside>
<br>
<aside class="gc-nttvs container">
<div class="span-2">
<h2>Links</h2>
<ul>
<li><a target="_blank" href="http://www.waterlevels.gc.ca/eng">Tides, Currents, and Water Levels - Canadian Hydrographic Service</a></li>
<li><a target="_blank" href="http://www.wateroffice.ec.gc.ca/index_e.html">Real-Time Hydrometric Data - Environment Canada</a></li>
<li><a target="_blank" href="http://www.ppa.gc.ca/">Pacific Pilotage Authority</a></li>
<li><a target="_blank" href="http://www.portvancouver.com">Port of Vancouver</a></li>
<li><a target="_blank" href="http://www.rupertport.com/">Port of Prince Rupert</a></li>
<li><a target="_blank" href="http://www.npa.ca/en">Nanaimo Port Authority</a></li>
<li><a target="_blank" href="https://nis.ccg-gcc.gc.ca/public/rest/messages/en/search">Navigational Warnings (NAVWARNs)</a></li>
<li><a target="_blank" href="https://www.marinfo.gc.ca/e-nav/index-en.php">Maritime Information Portal</a></li>
</ul>
</div>
</aside>
<br>
<p style="float:right;margin-bottom:-10px">Database last updated: <!--#include virtual="/Data/updated.inc" --> PST</p>
<!--#include virtual="/includes/footer-eng.html" -->