This paper aims to enhance both the quantity and quality of the streamflow data and metadata on gauging stations in India. The author integrated multiple datasets to update the information of gauging stations and compile historical streamflow data through a rigorous quality control process. The information and datasets provided in this study will prove valuable to hydrologic communities, while the methodologies presented can be adopted by both the administrative organizations and research communities to homogenize the hydrological datasets in India. I found this paper is generally well written. I recommend this paper to be accepted after few minor comments below are addressed.

1. The GHI dataset is compiled from multiple datasets. It will be good to add a flowchart showing the steps of how different datasets are processed and the relationships between GHI and these datasets. Figure 4 and Table 5 serve such purpose but the usage and relations of different datasets are not clear.
2. The base maps in figures are indistinct (e.g., figures 3 and 5). It seems that the author used screenshots of Google Maps and enlarged the images without properly dealing with the resolution. The letters of street names and landmark names are blurry. Please make sure to use high-resolution images for base map when making these figures.
3. In Section 3.5, the method of how hydrometeorological variables are compiled is not explicitly mentioned. Are these variables compiled directly from available datasets as listed in Table 5? Are there any newly generated time series estimates from existing data by, such as, model outputs or statistical calculations?
4. Some of the citation formats are incorrect. I see many places having the citation ends with double right parenthesis. For example, in Line 43, “River Discharge Data Set (RivDIS, Vorosmarty et al. (1998))”. It can be written as “River Discharge Data Set (RivDIS) (Vorosmarty et al., 1998)”. There are many other places with this issue (i.e., Lines 44, 54, 59, 115, 190, 242, 248, etc.). Please check throughout the manuscript.

This manuscript can be ACCEPTED after minor corrections based on the detailed report in the PDF file attached above.