Hydrological Simulation Study in Gansu Province of China Based on Flash Flood Analysis
Round 1
Reviewer 1 Report
Comments and Suggestions for AuthorsDear Authors,
Many thanks for this nice contribution and research in the field of flash flood analysis by using the CNFF model. Overall, I can see and appreciate the effort that has been invested in data processing, interpretation, and statistical analysis.
However, I feel that there still needs to be some work done to polish the manuscript before it can be accepted for publication.
Introduction section:
· The introduction is well-defined and provides sufficient information about the novelty of the method used in the manuscript. It contains the most important parts of an introduction, namely the objectives of the research, and a brief informative outline of the following research methods.
Research Area and Methods section:
· It is necessary to indicate the terrain slopes of the study area, from southwest to northeast [Line 84-85]. I recommend providing information about the minimum/maxim/average elevations in the study area, given the complex local surface topography
· Figure 1 needs to be modified in the English language. Also, it is important to modify the image resolution. Due to the low resolution, the legend cannot be read. It is mandatory to present a global map from which it derives the local one. I suggest showing the important elements of a map: like Lat/Long grid, the scale, north sign.
· For the “11 water system” need to provide the total length of each subsystem [Line 94-99], to understand what is the weight of each water system as a function of the total length.
· It is important to provide some references about the source of DEM of Gansu Province [Line 113-114] or [Line 126].
· Figure 2 needs to be modified in the English language. I suggest showing the important elements of a map: like Lat/Long grid, the scale, north sign.
· What is the “Data etc.” mentioned in line 127? Please correct the sentence.
· Please explain what is “Type attribute data” at line 131.
· It is necessary to modify the description from 133 to 136 lines. The basic idea is not understandable.
· Figure 3: replace and modify with the same mentions as in Figures 1 and 2. Pay attention to the figure caption (I suggest to extent the content of these).
· Equations (1), (2) and (3) missing references. If these equations are developed by the author, it needs to be added this information in the manuscript.
· Overall, the Research Area and Methods section is described properly, on condition that the above suggestions will be applied.
Results and Analysis section:
· Figures 4 and 5: replace and modify with the same mentions as in Figures 1 and 2. Pay attention to the figure caption (I suggest to extent the content of these).
· I suggest replacing Table 5 with graphs for calibration and validation results.
· Figures 6 and 7 need to be translated into English.
Conclusions section:
· The most important, namely the conclusion part of this paper is well described and focused on important results. However, I suggest reformulating the sentence from 455-457 lines, in the idea that “multi-source precipitation fusion data” will be used versus that it can be used….
General comments and suggestions for Authors
References - some references are missing. Please go through the text and support your statements with references to other literature and published works. For example, your first para and some of the statements need support or statements such as “The division of flash flood forecast and early warning zones is based on the topological structure of the natural river basin water system, based on the principle of similarity of natural geographical conditions and hydrological characteristics within the zone, comprehensively considering climate conditions, topography and landforms, and the distribution of water conservancy project construction, laying a data foundation for the parallel calculation of the CNFF model.” [Lines 152-157] needs a reference or is this your statement, and if so, what is this based on?
Please add newer references for similar studies, for example:
- Zhao, Gang, Ronghua Liu, Mingxiang Yang, Tongbi Tu, Meihong Ma, Yang Hong, and Xiekang Wang. "Large-scale flash flood warning in China using deep learning." Journal of Hydrology 604 (2022): 127222.
- Arseni, M., Voiculescu, M., Georgescu, L. P., Iticescu, C., & Rosu, A. (2019). Testing different interpolation methods based on single beam echosounder river surveying. Case study: Siret River. ISPRS International Journal of Geo-Information, 8(11), 507.
- Wang, X., Zhai, X., Zhang, Y., & Guo, L. (2023). Evaluating flash flood simulation capability with respect to rainfall temporal variability in a small mountainous catchment. Journal of Geographical Sciences, 33(12), 2530-2548.
Figures - It is important to pay attention to figure captions and provide sufficient text so that it is clear what you are trying to convey without having to look up the text.
Overall, I think the central idea of the manuscript is interesting and potentially interesting for others. The paper just needs more polishing! I would like to encourage you to improve this paper for further publication.
Author Response
Thank you very much for taking the time to review this manuscript. Please find the detailed responses in the attachment.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
Comments and Suggestions for Authors(1) “CNFF model uses the dynamic Muskingum method” – Based on this statement made by the authors, it is clear that the CNFF model is nothing but the Muskingum method. Therefore the authors must remove “CNFF” from the entire manuscript and replace it with “Muskingum”.
(2) The word “dynamic” also does not make any sense. Therefore, it must be removed.
(3) Nothing was mentioned about how the storage time constant K, x and Δt were chosen.
(4) Section 2.3.3 needs to be elaborated.
(5) As shown in Table 1, on what basis the ranges were chosen?
(6) In order to obtain accurate simulation results a snowmelt model must be considered for the Shivang and Heihe River basins as snowmelt runoff exists there.
(7) Analysis of the hydrological model HIMS is required which is used to simulate the Shiyang River basin.
(8) Since the CNFF model can be compatible with the runoff generation and confluence characteristics of different climate types in the simulation process of the natural hydrophysics of the watershed, due to the special geographical location and climatic conditions of Gansu Province with complex cause and mechanism of heavy rain and flood processes in small and medium-sized watersheds, rainfall, human activities, parameter uncertainty, and data conditions in the study area, etc., will reduce the actual simulation accuracy, so, the HEC-HMS rainfall-runoff model can be used instead of CNFF model. SCS unit hydrograph and Clark unit hydrograph methods can be used for slope transform, kinematic wave and lag algorithms for channel routing.
(9) Since the simulation results of the Shule River Basins are not ideal as it is sparsely distributed, the HEC-HMS rainfall-runoff model can be used there also.
(10) Figure 1 (The study area map), Figure 2 and Figure 3 are not in English language. Therefore, I could not understand these figures.
(11) Figures 5 and 6 are also not in English.
(12) In several units, superscripts were not used, for example, m3/s, km2.
(13) Full form of GIUH was not given correctly.
(14) In the manuscript title the phrase “China Flash Flood Hydrological Model” should be replaced with “Muskingum Method”.
Comments on the Quality of English LanguageMinor editing of English language required.
Author Response
Thank you very much for taking the time to review this manuscript. Please find the detailed responses in the attachment.
Author Response File: Author Response.pdf
Round 2
Reviewer 1 Report
Comments and Suggestions for AuthorsDear Authors,
Overall, I think the central idea of the manuscript is interesting and potentially interesting for others. In this form, the paper became more scientifically and more interesting. The conclusion part is supported by the result and give accordance between all scientific steps made to achieve the main purpose of this paper.
The overall recommendation to the editors, from my opinion, is to accept the manuscript if the resolution for all the figures will be improved. It is a must to do.
Author Response
Thank you very much for taking the time to review this manuscript. Please find the
details in the attachment.
Author Response File: Author Response.pdf
Reviewer 2 Report
Comments and Suggestions for AuthorsI do not agree with the manuscript title. It may be “Hydrological simulation study in Gansu province of China based on Flash Flood Analysis”
Figure 1 is not clearly visible. In this figure, several words are written in the local language. Please use only the English language so that your manuscript can be read by the global readers.
Figure 2 is not clearly visible. The scale of this Figure is in miles. It should be in km.
Could not understand Figure 4 as no index for the colours was provided.
The ordinates of Figure 6 were not shown.
All the variables will be in italics.
Comments on the Quality of English LanguageMinor editing of English language is required.
Author Response
Thank you very much for taking the time to review this manuscript. Please find the detailed responses in the attachment.
Author Response File: Author Response.pdf
