**4. Conclusions**

This study showed the comparison of the morphometric parameters classified as linear, areal and relief aspects from the two openly accessible multi-resolution DEMs, MERIT DEM and FABDEM. From the parameter values derived from two DEMs, it was concluded that the chosen study area is prone to flooding conditions during heavy rainfall with no disturbance from any geologic structures and the area is associated to thick vegetation with less occurrence of soil erosion. Variation is observed in basic parameters such as area and basin length. Among the linear aspects, parameters such as stream order, stream number and stream length showed significant variation between the two DEMs, whereas both the relief and areal aspects did not show much difference, irrespective of the DEM used. From the results, it was observed that variation among some of the parameters mainly depends on the source and resolution of DEM. It is, therefore, important to consider the type of DEM used for watershed delineation and in studies related to morphometric parameter estimation. It was visually observed from the drainage network generated from the two DEMs that drainage lines of the MERIT DEM seem more naturally close compared to FABDEM for our study area. Thus, from hydrological point of view, MERIT DEM can be used in flat regions and its drainage networks are also clearly represented for the study area. On the other hand, from the resolution point of view, FAB DEM with higher resolution (30 m) can be considered for revealing finer details in areas leading to high accuracy.

**Author Contributions:** Conceptualization, A.B. (Ashutosh Bhardwaj) and S.R.K.; methodology, A.B. (Ashutosh Bhardwaj); software, A.B. (Ankini Borgohain); validation, V.G., V.K. and A.B. (Ashutosh Bhardwaj); formal analysis, A.B. (Ankini Borgohain); investigation, A.B. (Ashutosh Bhardwaj); resources, A.B. (Ankini Borgohain); data curation, A.B. (Ankini Borgohain); writing—original draft preparation, A.B. (Ankini Borgohain); writing—review and editing, A.B. (Ashutosh Bhardwaj); visualization, A.B. (Ankini Borgohain); supervision, A.B. (Ashutosh Bhardwaj); project administration, A.B. (Ashutosh Bhardwaj). All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** No new data were created or analyzed in this study. Data sharing is not applicable to this article.

**Conflicts of Interest:** The authors declare no conflict of interest.
