ImpaQ Ecosystem•Clarivate, Scopus & CORE Data
Clarivate WoS 2024 / 2025 Data
IMPAQ
WoS ESCI Q4Scopus Q3SCImago #15,949Gold OA

Hydrological Research Letters

Identifier (ISSN):1882-3416(Print)
•
Publisher: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)
Clarivate JCR Index Advisory: Active (ESCI)
Clarivate IF (2026)
1↑ +0.2
Journal Impact Factor
IF Trend↓
WoS Quartile
Q4
WoS ESCIJCR Quartile
Clarivate WoS JCR
WoS Categories↓
JCR Release Date: 2026-06-17

Impact Factor Trend (2023–2026)

Clarivate IF trend for Hydrological Research Letters

WoS Q4
01121.120230.620240.8202512026
Annual Impact Factor Metric
Current (2026):1
Scopus SJR & RankScopus Q3
0.338
#15,949

SCImago Journal Rank citation prestige weighting

Scopus Year: 2025
H-Index (2025)
17

17 papers with at least that number of citations each

WoS: ESCIQ4
Self-Citation Rate16.7%
Safe Level (< 15%)Warning Level (> 20%)
Self-citation below 15% indicates strong scholarly independence.
Volume & Open AccessGold OA
12articles/year
100% Gold OA•100% Original Research

Aims & Scope

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.

Topics Covered (Recognized by AI)
Environmental science93.1%Geology88.5%Geography85%Physics65.4%Biology63.5%Engineering63.1%Ecology54.6%Climatology49.6%Meteorology48.8%Geotechnical engineering43.8%Hydrology (agriculture)38.8%Mathematics35.8%Oceanography35.8%Computer science33.5%History25.8%Archaeology23.8%Cartography22.7%Quantum mechanics20.4%
Primary Research Areas

WoS Categories & Quartiles

Detailed JCR / JCI category rankings and quartile breakdown from Clarivate

Clarivate JCR & JCI
JCRESCI2026

WATER RESOURCES

Q4
Rank117/132
IndexESCI
JCIESCI2026

WATER RESOURCES

Q4
Rank119/132
IndexESCI

Annual Historical Statistics & Publications

Track annual publication volume, total citations, and Impact Factor evolution

12 year
2026Latest
IF1
Articles / Year27
Total Citations4
2025
IF0.8
Articles / Year46
Total Citations39
2024
IF0.6
Articles / Year16
Total Citations44
2023
IF1.1
Articles / Year14
Total Citations54
2022
IF—
Articles / Year15
Total Citations61

SCImago & Scopus Journal Intelligence

Global SCImago ranking, SJR prestige index, Scopus coverage, and societal policy impact

Rank #15,949Scopus Q3SCImago Profile
Scopus Coverage:2015-2026
Scopus Broad Areas:Earth and Planetary SciencesEnvironmental Science
Scopus Citation Rank (SJR)Q3
0.338

Weighted prestige citation metric per document indexed in the Scopus database.

Quartile: Scopus Q3
Citations / Doc (2 years)
1.27

Average citations received per document published in the 2-year window.

2-Year Citation Window
Estimated Publication Fee (APC)
$2,669 USD

Estimated Article Processing Charge for Open Access publication.

Estimated cost / article

Scopus 3-Year Publication & Citation Window

3-Year Citations55
3-Year Documents44
Citable Documents44

Aggregated from Scopus database across the 3-year SJR evaluation window.

Societal Impact & Inclusivity (SCImago)

Policy Citations (Overton)0

Citations in government and international policy documents

Female Author Rate18.3%

Percentage of female authors published in the journal

Real-world societal policy reach and author gender diversity tracked by SCImago.

Scopus Subject Categories

Earth and Planetary Sciences (miscellaneous)Q3
Water Science and TechnologyQ3
Academic Metric Intelligence

Journal Metrics & Citation Visualizations

Total Cites vs Self-Cites

Evaluation of scholarly independence and citation reach

Total citations steady growth
Self-citation: 16.7%

Citations per Document

Citation metric windows across 2, 3, and 4 years

Cites / Doc (4 years)Cites / Doc (3 years)Cites / Doc (2 years)

Chinese Academy of Sciences (CAS) Classification

Major / minor zone classification and CAS Early Warning List history

Major Category (Broad Field):
4区 (Zone 4)Environmental Science & Ecology
Minor Category (Specific Field):
4区WATER RESOURCES
CAS Early Warning List History:
Updated annually: 2020 – 2024
2020
Not warned
2021
Not warned
2022
Not warned
2023
Not warned
2024
Not warned

Academic Intelligence Overview & Context

ImpaQ Analysis

Hydrological Research Letters (ISSN: 1882-3416) is a peer-reviewed international scholarly journal in the field of WATER RESOURCES, published 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) in Japan. The periodical holds a Journal Impact Factor (JIF) of 1.00, ranking in quartile Q4 of Web of Science (ESCI), a Scopus SJR indicator of 0.338 (Q3), an H-index of 17.

The journal enforces rigorous peer evaluation with an annual output of approximately 12 scientific articles. In terms of accessibility and author fees, it operates under the Gold OA model with an estimated APC of $2,669 USD. It serves as a benchmark publication platform for academics, researchers, and doctoral candidates seeking global research visibility.

Publishing & Editorial Information

Detailed publisher, peer-review turnaround, and publication cycle specifications

Open Access Model
Gold OA
Publisher
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)
Publication Language
English
Frequency
Periodic
Indexing & Databases
ESCIScopusDOAJPubMed

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Record UUID: c4a7854a-baaf-4b94-8ca9-b7ad9f3bb86f
Database Updated: 2026-10-01