  A new ground-based wide-field extensive air shower array known as the
High-Altitude Water Cherenkov (HAWC) Observatory promises a new window to
monitoring the $\sim$100 GeV gamma-ray sky with the potential for detecting a
high energy spectral cutoff in gamma-ray bursts (GRBs). It represents a roughly
15 times sensitivity gain over the previous generation of wide-field gamma-ray
air shower instruments and is able to detect the Crab Nebula at high
significance ($>$5 $\sigma$) with each daily transit. Its wide field-of-view
($\sim$2 sr) and $>$95% uptime make it an ideal instrument for detecting GRB
emission at $\sim$100 GeV with an expectation for observing $\sim$1 GRB per
year based on existing measurements of GRB emission.
  An all-sky, self-triggered search for VHE emission produced by GRBs with HAWC
has been developed. We present the results of this search on three
characteristic GRB emission timescales, 0.2 seconds, 1 second, and 10 seconds,
in the first year of the fully-populated HAWC detector which is the most
sensitive dataset to date. No significant detections were found, allowing us to
place upper limits on the rate of GRBs containing appreciable emission in the
$\sim$100 GeV band. These constraints exclude previously unexamined parameter
space.
