This dataset of Tibetan Plateau lake-catchment characteristics fills a data gap for conducting a variety of potential scientific studies on the lakes in the region, which itself is of great importance to understanding the earth systems. Development of the dataset is well justified and well designed. The dataset is comprehensive and contains many aspects of information on a large number of lakes over a long period of time (including time series data). Besides, potential users of the dataset would appreciate the distinction between full-lake-catchment and inter-lake-catchment statistics.

The only suggestion from the reviewer is to add a section to briefly discuss or highlight the uncertainties of such a dataset. For example, given that most of the environmental statistics were obtained from existing datasets (DEM, Land cover, climatic data, etc.), highlighting sources/magnititude of uncertainties of such datasets,  and discussing how the uncertainties propagate to the developed TP lake-catchment dataset would be beneficial to future users of this dataset.

Overall, the reviewer thinks the dataset is scientifically sound (adding discussion on uncertainty is a plus) and presented in a very clear manner. This dataset could be of great interest to the earth scientfic reserach communities.

The authors provide the Tibetan Plateau lake-catchment characteristics dataset, which contains a wide range of information such as topographic, climatic, land characteristics, and anthropogenic activity characteristics. The dataset will be a valuable input for relevant hydrologic or climatic studies in the region. The manuscript is generally well written, clear, and easy to follow. I have only a few comments on the manuscript. 

General comments:

1. The authors extract catchment attributes from various exiting datasets, such as MERIT Hydro dataset, SoilGrids, CMFD. Please add more descriptions of how those data are generated/obtained (are they observation-based? model-processed? machine learning-based?).
2. Given the use of existing datasets for obtaining the lake characteristics, I think the first part of the data development, i.e. catchment delineation is the critical step in your data development. Can you explain more about what kind of methods could be applied, and why you chose your method (instead of using Liu et al, 2020, which already exists) and any limitations/uncertainty of the method? 
3. I am not sure if I did something wrong, but I failed to connect to FTP to see the LCC-TP. I got the error saying “Home directory not available - aborting". - can you provide the full path of the dataset?

Specific comments; 

Fig.2: it would be helpful if you mark the first, second, and third steps (L82; “Three steps”) of the procedure also in the figure. 

Fig.4: until when does the "continue" repeat (i.e. from “stack is empty?” to ”push its upstream pixels into tack”)? 

L165-167: do you mean you provide multiple relief values computed with different window sizes? What is the purpose of using multiple window sizes? 

Lakes on the Tibetan Plateau are important for water cycle studies. There are many previous studies understanding the lake area variation and their influencing factors. But there are still lack of systematic studies including the lake-catchment characteristics. In this study, the authors put many attributes together, which has great potential to help us understand the characteristics of lake-catchments on the TP in a systematic way. I find this study is novel, and has potential to be an important paper for process understanding on the TP lakes. But before considering for acceptance I have some concerns.

1. Although the streamflow observations on the TP is very limited, I suggest the authors to include more time-series of the hydrologic and meteorological related attributes. Hydrologic related data may include the lake area and volume temporal variation, the area and volume changes of glaciers, the changes of the proportion of permafrost and seasonal frozen-soil. Meteorological data can be even reanalysis data, e.g. daily precipitation and air temperature. This will make this study more systematic. These new chronical attributes will allow us to do more process understanding on the lake area changes.
2. What does precipitation rate mean? What does “fractional snow cover” mean? Snow is an important component in cold region hydrology. Is it possible to give the time-series of fractional snow cover as another attribute? Is there snow water equivalent data available?