The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey:
  The Damped Lyman-$\alpha$ systems Catalog
  We present the characteristics of the Damped Lyman-$\alpha$ (DLA) systems
found in the data release DR16 of the extended Baryon Oscillation Spectroscopic
Survey (eBOSS) of the Sloan Digital Sky Survey (SDSS). DLAs were identified
using the convolutional neural network (CNN) of~\cite{Parks2018}. A total of
117,458 absorber candidates were found with $2 \leq \zdla \leq 5.5$ and $19.7
\leq \lognhi \leq 22$, including 57,136 DLA candidates with $\lognhi \geq
20.3$. Mock quasar spectra were used to estimate DLA detection efficiency and
the purity of the resulting catalog. Restricting the quasar sample to bright
forests, i.e. those with mean forest fluxes $\meanflux>2\times\fluxunit$, the
completeness and purity are greater than 90\% for DLAs with column densities in
the range $20.1\leq \lognhi \leq 22$.
