See attached PDF. I put my focus mainly on the structure of the dataset. It is therefore advisable to have at least two more reviews with a detailed look on the text part (introduction, methodology, discussion).

The paper provides rainfall and streamflow data for several stations in Haiti, especially for 24 catchments where the paper provides simulated streamflow (monthly and hourly time steps) using GR2M and GR4J for the period of 1920-1940. Similarly to CAMELS, the paper also provides catchment attributes related to topography, geology, land use etc.

Even though the dataset is mainly for 1920-1940 (almost a century ago), the paper is relevant as it provides systematic and consistent data for Haiti. Perhaps one of the only of this type for the Caribbean. The paper is relatively well written and of interest of ESSD. However, some of the methodological choices are not clear. It could be published with some minor editing, especially those raised by RC1 regarding the dataset. Below, I provide some specific suggestions.

ABSTRACT

Besides being “exposed to hydroclimatic hazards” is there anything else that would make the hydrology of the area interesting? The paper could clarify this point starting from the abstract.

What are the limitations of the dataset? Why is it that mainly the 1920-1940 period is analyzed?

INTRODUCTION:

P1L45 – CAMELS also provides hydroclimatic signatures?

P2L47 – Define “these works”.

P2L50 – It reads like there is nothing for Haiti, but it seems that the dataset was built on previous data. Shouldn’t the background be provided here?

P2L53 – What is the definition of “anarchic urbanization”?

P2L63 – “These two databases…” See previous comment on line 50.

P2L75 – Is “producing” the appropriate verb here?

P2L77 – Why for the 1920-1940 period?

DATA USED

L90 – What is the meaning of 70 daily series, but 24 are used? Why 1920-1940? Provide a better description of missing data etc.

L106 – Can you also provide a graph showing missing data periods and percentage?

L122 – Exactly what significant gaps?

METHODOLOGY

L138 – Why for 21 of 24?

L159 – Why were the remainder not provided?

L169 – What is the meaning of “numerically calculated”?

L171-172 – What does it mean to “relocate manually”?

L174 – What “numerical model”?

L177 – This is not clear.

FIG.1 – Provide Haiti country boundary. Are the gray lines the river network? How to consider if a raingauge is relevant? What are the white dots?

L187 – Is this the best method to identify appropriate raingauge?

L213-214 – Can this be shown in a figure? What is a continuous catchment rainfall?

L216-221 – This is not clear.

L222-224 – Why was it used then? This is contradictory to the previous explanation.

L253 – What is the meaning of “most relevant method”?

L263 – Parameters are called “Period 1”… this is not clear and not the best choice of terms.

L277 – SRTM and catchment attributes should be all explained in the same section.

L283 – to produce… are produced.

L288-292 – Should be clearly explained/justified in the beginning. I figure showing the changes would be interesting.

Fig. 3, 5, 6, and 8 should be moved to supplement. This is not well explained and get in the way of the analysis.

Fig 4 and 9 – The color pallet is not appropriate.

Fig 10 – Why this figure? Is this an average for the entire country? How relevant for understanding the hydrology of the region is this?

Fig 13 and 14 – Instead of this bars, isn’t it better to provide a map of the geology and aquifer type of the region? Check most of the CAMELS papers for good examples.

Fig 15 – This is a great example of useful graphics for having a quick look at the data and also precious information for decision makers.

CONCLUSION AND PERSPECTIVE

L528 – “over several decades” seems to be a stretch when considering 1920-1940.

L531 – Please, define and show in a figure what is meant by massive deforestation and anarchic urbanization, otherwise, delete it.

L533-535 – Strange choice of words for these two sentences. Maybe delete?