https://piahs.copernicus.org/articles/ Recent articles of the journal Proceedings of IAHS en https://doi.org/10.5194/piahs-388-43-2026 Smart management of aquatic environments: application in above-ground fish farming tanks Yesid Olahonikpèkoun Eriola, Chaim Vivien Doto, Maurel Richy Aza-Gnandji, Ayina Sandra Christelle Boko, Wenceslas Adomou, Gontrand Comlan Bagan, and Hyppolite Agadjihouede Proc. IAHS, 388, 43–47, https://doi.org/10.5194/piahs-388-43-2026, 2026 Fish farming supports food security in Benin, but traditional methods can be inconsistent. We built a simple system that monitors water conditions, adjusts conditions automatically, and reduces manual work. Tests showed more stable environments and healthier fish. This approach offers an affordable way for small farmers to improve production through easy real-time management. Fri, 08 May 2026 07:38:56 +0200 https://doi.org/10.5194/piahs-389-9-2026 Residual-based hybrid modeling combining GR4J and machine learning for streamflow prediction in data-scarce catchment: case of the Ouémé catchment at Bonou (Benin, West Africa) Jérôme Enagnon Ahouandjinou, Aymar Yaovi Bossa, and Jean Hounkpe Proc. IAHS, 389, 9–15, https://doi.org/10.5194/piahs-389-9-2026, 2026 This study aims to improve river flow prediction in a region where hydrological data are limited, which is essential for water management and flood preparedness. We combined a traditional rainfall–runoff model with data-driven learning methods to correct systematic simulation errors. Results show that the combined approach predicts river flow more accurately than the traditional model alone. These findings highlight a practical way to improve water resource planning in data-limited regions. Wed, 06 May 2026 07:38:56 +0200 https://doi.org/10.5194/piahs-388-33-2026 Spatiotemporal analysis of meteorological and hydrological droughts across the Beninese part of the Niger River Basin (West Africa) Orou Moctar Ganni Mampo, Kossi François Guedje, Ezéchiel Obada, Halissou Yarou, Bruno Merz, Ravi Kumar Guntu, Jean Hounkpe, and Adéchina Eric Alamou Proc. IAHS, 388, 33–41, https://doi.org/10.5194/piahs-388-33-2026, 2026 This study explored how droughts have evolved over time in northern Benin, a region that relies heavily on rainfall for farming. By analyzing rainfall and river flow patterns, the research found that while conditions improved after major droughts in the 1970s and 1980s, recent years have seen longer dry spells and worsening water shortages. These results can inform better planning for farming and water use in a changing climate. Tue, 28 Apr 2026 07:38:56 +0200 https://doi.org/10.5194/piahs-389-1-2026 Spatial estimation of land loss in Zou catchment area at Atchérigbé outlet (Benin center) Renaud Jean-Eudes Tundé Mitchozounou, Brunelle Eunice Toyin Icoutchika, Tchihoundro Gilbert Danhossou, Sessi Victaurya Eurydice Zinzindohoue, and Davy Fifamè Karine Kodji Proc. IAHS, 389, 1–7, https://doi.org/10.5194/piahs-389-1-2026, 2026 This study focus on maps soil loss in the Zou catchment in central Benin to help protect farmland. Using satellite images, rainfall records and soil data, we identified areas where soil lost is most at risk. Most of the basin shows low soil loss risk, while small zones on steep slopes are more exposed. The results show the important for better land care and future work with higher-resolution satellite data. Thu, 16 Apr 2026 07:38:56 +0200 https://doi.org/10.5194/piahs-388-25-2026 Assessing the vulnerability of family farms to rainfall-induced flood risks in the municipality of Kandi, Benin Sénadé Sylvie Hounzinme, Monsoundé Etienne Dossou, Tarick Adamou, and Madjidou Oumorou Proc. IAHS, 388, 25–31, https://doi.org/10.5194/piahs-388-25-2026, 2026 This study examines how family farms in Kandi, northern Benin, are affected by rainfall flooding. Data from 80 farmers show that smaller farms are most vulnerable due to limited resources, while larger farms are better equipped to cope. Strengthening education, training, credit access, and cooperative support can help small farmers adapt. The research highlights inequalities in vulnerability and the need for inclusive strategies to improve resilience. Tue, 17 Feb 2026 07:38:56 +0100 https://doi.org/10.5194/piahs-388-17-2026 Sustainable water management for rice cultivation under climate change: a case study of the Lower Ouémé Valley, Southern Benin Marilyn Karen Soudé, Luc Ollivier Sintondji, David Houéwanou Ahoton, and René Bodjrènou Proc. IAHS, 388, 17–24, https://doi.org/10.5194/piahs-388-17-2026, 2026 The Lower Ouémé Valley is suitable to rice production thanks to its fertile soils and water resources, though challenged by water management. Two innovative approaches, Smart-Valleys and Intensive Rice Cultivation System, have been implemented to remedy this situation. The combination of these two approaches can improve productivity while conserving water resources. However, their success depends on farmers' ongoing training, access to quality inputs and institutional support. Fri, 09 Jan 2026 07:38:56 +0100 https://doi.org/10.5194/piahs-388-9-2025 Dynamics of freshwater benthic macroinvertebrates in West African lagoons: Lake Nokoué and Porto-Novo Lagoon complex, Southern Benin Roger Bolaya Lingofo, Mouhamed Orou Nari Chabi Kpera, Serge Hubert Togouet Zébazé, and Youssouf Abou Proc. IAHS, 388, 9–16, https://doi.org/10.5194/piahs-388-9-2025, 2025 The Lake Nokoué and Porto-Novo Lagoon complex represents the most important Lagoon system in Benin. It  Regarding the hydrological regime, a predominance of strictly freshwater taxa was noted during the High water period in Lake Nokoué. Furthermore, this predominance was recorded during both High and Low water periods within the Porto-Novo Lagoon. Thus, the variation of these taxa was found to be more pronounced in Lake Nokoué than in the Porto-Novo Lagoon. Fri, 12 Dec 2025 07:38:56 +0100 https://doi.org/10.5194/piahs-388-1-2025 Spatio-temporal variation of water physicochemical parameters in Lake Toho (Southern Benin) Mouhamed Orou Nari Chabi Kpera, Roger Bolaya Lingofo, and Youssouf Abou Proc. IAHS, 388, 1–8, https://doi.org/10.5194/piahs-388-1-2025, 2025 Lake Toho is a small freshwater lake located in southern Benin. From February to June 2024, water quality was assessed using monitoring equipment. The results indicate high levels of nutrients that could cause ecological problems such as eutrophication and the disappearance of aquatic species. Market gardening and riverside agriculture are responsible for this pollution. Thu, 13 Nov 2025 07:38:56 +0100 https://doi.org/10.5194/piahs-385-501-2025 Preface: Hydrological Sciences in the Anthropocene – a structured community effort Christophe Cudennec, Ernest Amoussou, Yonca Cavus, Pedro L. B. Chaffe, Svenja Fischer, Salvatore Grimaldi, Jean-Marie Kileshye Onema, Mohammad Merheb, Maria-Jose Polo, Eric Servat, and Elena Volpi Proc. IAHS, 385, 501–511, https://doi.org/10.5194/piahs-385-501-2025, 2025 Wed, 12 Feb 2025 07:38:56 +0100 https://doi.org/10.5194/piahs-385-499-2025 100 Years of IAHS – Graphic capitalisation and poetic celebration Christophe Cudennec Proc. IAHS, 385, 499–500, https://doi.org/10.5194/piahs-385-499-2025, 2025 In centenary celebration of IAHS, Converging knowledge, shared in global embrace, Hydrological sciences in captivating displays, A graphic chaptering, and poetic interlace. Tue, 11 Feb 2025 07:38:56 +0100 https://doi.org/10.5194/piahs-386-353-2025 Preface: ICFM9 – River Basin Disaster Resilience and Sustainability by All Toshio Koike, Shinji Egashira, Miho Ohara, Abdul Wahid Mohamed Rasmy, Tomoki Ushiyama, Mamoru Miyamoto, Daisuke Harada, Kensuke Naito, Christophe Cudennec, and Svenja Fischer Proc. IAHS, 386, 353–354, https://doi.org/10.5194/piahs-386-353-2025, 2025 Thu, 23 Jan 2025 07:38:56 +0100 https://doi.org/10.5194/piahs-387-1-2024 Preface: Mountain Hydrology and Cryosphere Rijan Bhakta Kayastha, Hari Krishna Shrestha, and Dhiraj Pradhananga Proc. IAHS, 387, 1–2, https://doi.org/10.5194/piahs-387-1-2024, 2024 Mon, 18 Nov 2024 07:38:56 +0100 https://doi.org/10.5194/piahs-387-65-2024 Backwater effect in lowland regions due to bridge structure: a case study of Shreekhandapur, Kavre, Nepal Rizbi Buddhacharya, Sailesh Maharjan, Rupesh Choudhary, Shyam Sundar Khadka, and Santosh Chaudhary Proc. IAHS, 387, 65–71, https://doi.org/10.5194/piahs-387-65-2024, 2024 Our study examined the backwater effect due to bridge piers in lowland areas. The results showed that replacing the old bridge with a new design featuring fewer and narrower piers, along with a higher deck level, reduced the backwater effect and flood levels. Also, using a 3 m floodwall upstream further decreased inundated area by over 50 %. These findings highlight the consideration of environmental factors in bridge design to mitigate flood risks. Mon, 18 Nov 2024 07:38:56 +0100 https://doi.org/10.5194/piahs-387-59-2024 Glacial lake outburst flood (GLOF) modeling of Tsho Rolpa glacial lake, Nepal Rijan Bhakta Kayastha and Sunwi Maskey Proc. IAHS, 387, 59–63, https://doi.org/10.5194/piahs-387-59-2024, 2024 Glacial lake outburst flood (GLOF) modeling of Tsho Rolpa showed that, even if the lake breaches by 20 m in 40 years (from 2021), there will be a sufficient lead time of more than 7 h for early warning and human evacuations in the downstream areas. However, precautionary measures such as community-based GLOF early-warning systems and mechanisms allowing close observation in the case of GLOF events should be established in GLOF-prone regions. Mon, 18 Nov 2024 07:38:56 +0100 https://doi.org/10.5194/piahs-387-95-2024 Assessment of permafrost-related hazards in China: based on Chinese literature Silian Pan, Prashant Baral, and Miriam Jackson Proc. IAHS, 387, 95–101, https://doi.org/10.5194/piahs-387-95-2024, 2024 We show, for the first time, a comprehensive review of permafrost hazard research in High Mountain Asia (HMA) using literature published in Chinese, accessible through the China National Knowledge Infrastructure (CNKI) database.  The proposed review aims to focus only on High Mountain Asia, mainly territories in China. This review article will help to communicate permafrost hazards in the Chinese scientific literature to the English-speaking scientific community. Mon, 18 Nov 2024 07:38:56 +0100 https://doi.org/10.5194/piahs-387-3-2024 Assessing the characteristics of extreme floods in Nepal Aabhash Bhattarai, Utsav Bhattarai, Koshish Raj Maharjan, and Laxmi Prasad Devkota Proc. IAHS, 387, 3–8, https://doi.org/10.5194/piahs-387-3-2024, 2024 A study was conducted considering extreme floods in Nepal from 1980 to 2015 and showed that most major floods occur during the monsoon season, especially in July and August, with August being the month with the highest number of extreme floods. The research emphasizes that the majority of the largest floods occur from mid-June to early September. This information aids Nepalese authorities in planning dynamic resource allocation, disaster response, and effective flood management. Mon, 18 Nov 2024 07:38:56 +0100 https://doi.org/10.5194/piahs-387-79-2024 Landslide hazard mapping of Wayanad District of Kerala, India, incorporating copula-based estimation of joint probability of rainfall Shamla Dilama Shamsudeen and Adarsh Sankaran Proc. IAHS, 387, 79–86, https://doi.org/10.5194/piahs-387-79-2024, 2024 In order to create a comprehensive map of landslide hazards for each specific location, it is essential to develop and integrate the spatial and temporal probabilities of landslides. This paper proposes a joint-probability framework that uses copula functions to generate a landslide hazard map for Wayanad District of Kerala, India, using multi-site rainfall data taking into account intensity and duration of rainfall. Mon, 18 Nov 2024 07:38:56 +0100 https://doi.org/10.5194/piahs-387-33-2024 Potential of tree-ring chronologies for multi-centennial streamflow reconstructions: an insight from Nepal Narayan P. Gaire, Yub R. Dhakal, Santosh K. Shah, and Ze-Xin Fan Proc. IAHS, 387, 33–39, https://doi.org/10.5194/piahs-387-33-2024, 2024 Tree rings are important natural archives that provide information about tree age and also reveal past climate and hydrological events. The Nepal tree-ring width chronology network, including multiple tree species, revealed huge potential to reconstruct multi-centennial long hydro-climates in the central Himalayas. Streamflow reconstruction of Sinja Khola, Diware, over the past 300 years revealed interannual- to multi-decadal-scale flow variability, along with some long declining trends.  Mon, 18 Nov 2024 07:38:56 +0100 https://doi.org/10.5194/piahs-387-47-2024 The study of riparian areas in tourism: toward a conceptual framework of riparian tourism Rajiv Dahal and Shamik Chakraborty Proc. IAHS, 387, 47–51, https://doi.org/10.5194/piahs-387-47-2024, 2024 The paper proposes riparian tourism as a holistic and sustainable form of tourism that encompasses both consumptive and non-consumptive forms. It delves into creating a conceptual framework for riparian tourism, including cryo-tourism. This model centres around community ownership and stewardship, furthering robust institutional set-ups and active public-policy discourse.  Mon, 18 Nov 2024 07:38:56 +0100 https://doi.org/10.5194/piahs-387-17-2024 A hybrid approach to enhance streamflow simulation in data-constrained Himalayan basins: combining the Glacio-hydrological Degree-day Model and recurrent neural networks Dinesh Joshi, Rijan Bhakta Kayastha, Kundan Lal Shrestha, and Rakesh Kayastha Proc. IAHS, 387, 17–24, https://doi.org/10.5194/piahs-387-17-2024, 2024 This study explores the potential of integrating data science models to enhance the predictive capacity of a theory-guided glacier hydrological model for improved river discharge simulations in the Himalayan basins. By combining data science and physical process models, the study addresses the limitations inherent in each approach. Mon, 18 Nov 2024 07:38:56 +0100