n class="va">in_wb_COMID</span>, <span class="va">outlet_fline_COMID</span><span class="op">)</span></span>
<span><span class="co">#&gt;    near_wb_COMID near_wb_dist in_wb_COMID outlet_fline_COMID</span></span>
<span><span class="co">#&gt; 1             NA           NA          NA                 NA</span></span>
<span><span class="co">#&gt; 2       13293226    11.013063          NA           13294384</span></span>
<span><span class="co">#&gt; 3             NA           NA          NA                 NA</s