Scimago Journal & Country Rank

Hydrological Research Lettersopen access



Universities and research institutions in Japan

Subject Area and Category


Japan Society of Hydrology and Water Resources



Publication type








How to publish in this journal


Hydrological Research Letters (HRL) is an international and trans-disciplinary electronic online journal published jointly by Japan Society of Hydrology and Water Resources (JSHWR), Japanese Association of Groundwater Hydrology (JAGH), Japanese Association of Hydrological Sciences (JAHS), and Japanese Society of Physical Hydrology (JSPH), aiming at rapid exchange and outgoing of information in these fields. The purpose is to disseminate original research findings and develop debates on a wide range of investigations on hydrology and water resources to researchers, students and the public. It also publishes reviews of various fields on hydrology and water resources and other information of interest to scientists to encourage communication and utilization of the published results. The editors welcome contributions from authors throughout the world. The decision on acceptance of a submitted manuscript is made by the journal editors on the basis of suitability of subject matter to the scope of the journal, originality of the contribution, potential impacts on societies and scientific merit. Manuscripts submitted to HRL may cover all aspects of hydrology and water resources, including research on physical and biological sciences, engineering, and social and political sciences from the aspects of hydrology and water resources. Join the conversation about this journal

The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles. Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.

Earth and Planetary Sciences (miscellaneous)2016Q2
Earth and Planetary Sciences (miscellaneous)2017Q3
Earth and Planetary Sciences (miscellaneous)2018Q2
Earth and Planetary Sciences (miscellaneous)2019Q2
Earth and Planetary Sciences (miscellaneous)2020Q2
Water Science and Technology2016Q2
Water Science and Technology2017Q3
Water Science and Technology2018Q2
Water Science and Technology2019Q2
Water Science and Technology2020Q3

The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.

Total Documents

Evolution of the number of published documents. All types of documents are considered, including citable and non citable documents.

Citations per document

This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.

Cites per documentYearValue
Cites / Doc. (4 years)20150.000
Cites / Doc. (4 years)20160.238
Cites / Doc. (4 years)20170.628
Cites / Doc. (4 years)20180.875
Cites / Doc. (4 years)20191.169
Cites / Doc. (4 years)20201.621
Cites / Doc. (3 years)20150.000
Cites / Doc. (3 years)20160.238
Cites / Doc. (3 years)20170.628
Cites / Doc. (3 years)20180.875
Cites / Doc. (3 years)20191.286
Cites / Doc. (3 years)20201.477
Cites / Doc. (2 years)20150.000
Cites / Doc. (2 years)20160.238
Cites / Doc. (2 years)20170.628
Cites / Doc. (2 years)20181.000
Cites / Doc. (2 years)20190.853
Cites / Doc. (2 years)20201.267
Total Cites 

Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.

Self Cites20150
Self Cites20160
Self Cites20176
Self Cites20182
Self Cites20195
Self Cites20202
Total Cites20150
Total Cites20165
Total Cites201727
Total Cites201863
Total Cites201972
Total Cites202065
External Cites per Doc 
Cites per Doc

Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.

External Cites per document20150
External Cites per document20160.238
External Cites per document20170.488
External Cites per document20180.847
External Cites per document20191.196
External Cites per document20201.432
Cites per document20150.000
Cites per document20160.238
Cites per document20170.628
Cites per document20180.875
Cites per document20191.286
Cites per document20201.477
% International Collaboration

International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.

YearInternational Collaboration
Citable documents 
Non-citable documents

Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.

Non-citable documents20150
Non-citable documents20160
Non-citable documents20170
Non-citable documents20180
Non-citable documents20190
Non-citable documents20200
Citable documents20150
Citable documents201621
Citable documents201743
Citable documents201872
Citable documents201956
Citable documents202044
Cited documents 
Uncited documents

Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.

Uncited documents20150
Uncited documents201618
Uncited documents201725
Uncited documents201835
Uncited documents201924
Uncited documents202016
Cited documents20150
Cited documents20163
Cited documents201718
Cited documents201837
Cited documents201932
Cited documents202028
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Metrics based on Scopus® data as of April 2021
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