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International Journal of Hydrological and Environmental for Sustainability

ijhes
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Published by Foundation of Advanced Education

ISSN : 28286405 EISSN : 28285050 DOI : -

Core Subject : Science, Agriculture, Social, Engineering,

Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Environmental Science

Journal Overview International Journal of Hydrological and Environmental for Sustainability (IJHES) [e-ISSN: 2828-5050] is an internationally recognised peer-reviewed journal for the dissemination of innovations and solutions focused on enhancing water and Environment management best practice. The journal provides a conduit between academics and practitioners. We therefore particularly encourage contributions focussed at the interface between academia and industry, which deliver industrially impactful applied research underpinned by scientific evidence. We are keen to attract papers on a broad range of subjects including water and wastewater treatment, water and air polluted, water and environmental engineering, Environmentally Friendly Architectural Engineering (Green Building) and much more. Since 2022, IJHES issues 3 times a year (February, June, and October). Please click here for more information Reasons to Publish - Publish your work in International Journal of Hydrological and Environmental for Sustainability (IJHES) is ISI listed demonstrating that your paper will be published alongside high quality, impactful research - The journals focus and scope means you will reach both the research and practitioner communities, Water and Environment Journal showcases innovative and integrated approaches to all aspects of environmental management, with a global perspective - The journal welcomes papers on a broad range of topics including all aspects of water processing and engineering, the water cycle, air pollution, waste management, and environmental conservation - Your paper will reach professionals working in academia, consultancies, Governments, regulators, NGOs and the environment sector International Journal of Hydrological and Environmental for Sustainability (IJHES) is keen to attract papers on a broad range of subjects including: - Water and waste water management - Applied science and technology for environment and sustainable energy - Geophysics and geochemistry - Environmental technology - Water and environmental engineering - Environmentally Friendly Architectural Engineering - Geothermal system - Biotechnology and Biomaterials for Sustainability - Air quality and climate change

Arjuna Subject : Ilmu Lingkungan (semua ketegori) - Ilmu Lingkungan (Lain-Lain)

Articles 86 Documents

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Imaging Fault Gouge Zones along the Menanga Fault using Integrated Electrical Resistivity and Multi-frequency Ground Penetrating Radar in Pesawaran, Lampung, Indonesia Rahmat Nawi Siregar; Muhammad Ragil Setiawan; Bilal Al Farishi; Ikah Ning P Permanasari; Sofiana Herman; Denny Pratama; Devina Anggraini; Shofiya Nisfatul Laily; Monalisa Devinci Pardosi
International Journal of Hydrological and Environmental for Sustainability Vol. 5 No. 3 (2026): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v5i3.1009

Detecting fault gouge zones in poorly exposed fault systems is critical for understanding active deformation. The Menanga fault in Pesawaran (Lampung) revealed its activity during the 2021 swarm earthquake near Mt. Ratai at 1.5-4.5 km depth. Due to the limited exposure of the fault plane, geophysical imaging is applied to delineate subsurface structures. In this work, we conducted three survey lines using integrated geoelectric method and multi-frequency ground penetrating radar (50 MHz, 100 MHz, and 250 MHz) to investigate a clear image of Menanga fault zone. The electrical resistivity profiles revealed lateral discontinuities between relatively high-resistivity blocks separated by lower-to-intermediate resistivity materials, whereas the GPR profiles showed signal attenuation, chaotic radar facies, and discontinuous reflectors associated with structurally disturbed zones. Fault-related deformation zones were characterized by resistivity contrasts relative to adjacent high-resistivity blocks, together with low-amplitude, chaotic, and discontinuous GPR reflections. The clearest anomaly occurs at approximately 96 m offset along Line 1, where the subsurface discontinuity coincides with an exposed fault zone. Line 2 shows multiple fault-related discontinuities, whereas Line 3 exhibits an inferred deformation zone without clear surface exposure. Overall, the integration of electrical resistivity and multi-frequency GPR effectively delineates the shallow architecture of the Menanga Fault and provides geophysical evidence of fault-related deformation consistent with previous seismic and geomorphological studies.

Valorization of Tofu-Wastewater Anaerobic Digestate into Bacterial Cellulose Using Acetobacter Xylinum Laras Andria Wardani; Andi Nuraliyah
International Journal of Hydrological and Environmental for Sustainability Vol. 5 No. 3 (2026): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v5i3.1458

Anaerobic digestate generated from tofu-industry wastewater treatment frequently contains residual organic matter exceeding wastewater quality standards, necessitating further treatment or valorization. This study aimed to evaluate the effects of sugar, NPK supplementation on bacterial-cellulose formation from tofu-wastewater anaerobic digestate, determine the treatment producing the highest pellicle thickness, dried bacterial cellulose sheet; and preliminary supplementary-material cost estimation. A 2×3 factorial design comprising two sugar concentrations (15%; 30%w/v), three NPK concentrations (0.3%; 0.5%; 0.7%w/v) was applied, with three replicates each. Anaerobic digestate (500 mL) was inoculated with 10%(v/v) Acetobacter xylinum and incubated at approximately 30°C (14 days). The greatest bacterial-cellulose thickness was obtained in 15% sugar, 0.3% NPK, reaching 1.13cm, while 30% sugar supplementation substantially reduced pellicle formation. The corresponding dried sheet thickness was 0.075cm. Preliminary supplementary-material costs were estimated at IDR1,386,- for consumable inputs. These findings demonstrate the potential of tofu-wastewater anaerobic digestate as an alternative substrate for bacterial-cellulose production.

Assessment of Irrigation Water Availability and Demand Using the F.J. Mock Method Laksono Djoko Nugroho; Cesaltina da Costa Moreira; Esti Wulandari
International Journal of Hydrological and Environmental for Sustainability Vol. 5 No. 3 (2026): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v5i3.1455

Reliable assessment of water availability relative to irrigation demand is essential for irrigation rehabilitation planning, particularly in systems where infrastructure deterioration may reduce operational flexibility during low-flow periods. This study assessed irrigation water availability and demand in the Bekoh Irrigation Area, Ngawi Regency, East Java, Indonesia, which serves a command area of 1,921 ha. Water availability was estimated using the F.J. Mock rainfall–runoff method based on rainfall records from five stations for 2016–2025 and climatological data for 2021–2025. The analysis was conducted at a ten-day temporal resolution, and the 80% dependable discharge (Q80) was adopted as the basis for irrigation water-availability assessment. Irrigation demand was calculated for a Rice I–Rice II–Secondary Crops cropping pattern by considering land preparation, crop evapotranspiration, percolation, effective rainfall, water-layer replacement, irrigation efficiency, and planted area. The calculated Q80 discharge ranged from approximately 0.27 to 3.05 m³/s, while the maximum irrigation demand reached approximately 1.153 m³/s. The resulting water balance was generally positive; however, several ten-day periods showed very small or zero margins, particularly during parts of the late dry season, indicating that water availability should not be interpreted as a secure year-round surplus. The contribution of this study is therefore not limited to conventional water-balance estimation, but extends to identifying hydrologically critical periods that can support cropping-schedule evaluation and prioritization of irrigation rehabilitation and operational management. Because observed discharge data were not available for calibration and validation, the F.J. Mock discharge results are treated as model-based preliminary estimates rather than fully validated streamflow. Under the adopted hydrological, cropping-calendar, and irrigation-efficiency assumptions, the proposed cropping pattern may be supported, although field implementation requires discharge monitoring and evaluation of actual conveyance losses.

Seismotectonic Controls on the Toba–Samosir Subsurface Environment Revealed by Double-Difference Earthquake Relocation Habibah Natasya Amalya; Dian Namira; Lailatul Husna Lubis; Sugeng; Ridwan Yusuf Lubis; Russell Ong
International Journal of Hydrological and Environmental for Sustainability Vol. 5 No. 3 (2026): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v5i3.1617

North Sumatra is characterized by complex interactions among the Sumatran Fault System, regional subduction, and the volcanotectonic setting of the Toba Caldera, producing heterogeneous shallow crustal seismicity and structurally controlled subsurface environments. This study investigates the seismotectonic and subsurface structural characteristics of North Sumatra using double-difference earthquake relocation, with particular emphasis on the Toba–Samosir region. Earthquake phase data recorded during 2021–2025 were processed using the HypoDD method. A total of 834 events were included in the relocation analysis, of which 411 yielded stable relocation solutions. Event pairing generated 8,084 earthquake pairs and 65,581 differential-time observations from P- and S-wave arrivals. The relocated catalog shows a more compact spatial distribution than the initial locations, particularly around Tarutung and Lake Toba–Samosir. In Samosir, 46 relocated earthquakes occur at depths of 0.39–14.15 km, with a median depth of 5.60 km, indicating predominantly shallow crustal seismicity. Comparison with mapped tectonic structures shows that several relocated clusters occur near the Renun and Toru fault zones, whereas the principal Samosir cluster is spatially offset from the mapped Samosir Fault. This pattern may indicate a previously unresolved subsurface seismogenic structure that could influence fracture-controlled permeability and subsurface fluid pathways within the Toba–Samosir environmental system, although this interpretation requires further geological and geophysical verification. Relocation quality is supported by a marked shift in RMS residuals toward lower values, with the dominant post-relocation interval occurring at 0–100 ms compared with approximately 400–600 ms before relocation. These results demonstrate that double-difference relocation can improve the characterization of shallow subsurface structures and provide a structural basis for understanding tectonic controls on environmental and potentially hydrogeological processes in the Toba–Samosir region.

Hydrogeochemical Characterization and Geothermometric Assessment of the Gunung Kapur Geothermal System and Surrounding Thermal Waters, Jambi, Indonesia Akroma Hidayatika; Agung Harijoko; Suharno; Fajri Farid; Medi Kurnia Putri; Nanda Hanifah
International Journal of Hydrological and Environmental for Sustainability Vol. 5 No. 3 (2026): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v5i3.1624

The Gunung Kapur area in Jambi is part of a geothermal region characterized by volcanic, plutonic, and hydrothermal alteration features. This study evaluates the hydrogeochemical characteristics, fluid types, equilibrium conditions, and inferred reservoir temperatures of the Gunung Kapur geothermal system and surrounding thermal waters using pH, major-ion chemistry, Cl–SO₄–HCO₃ classification, silica and cation geothermometers, and the Na–K–Mg geoindicator. The dataset includes thermal waters from Idung Mancung, Sapan Melolong, Semurup 1, and Semurup 2, together with Kerinci cold water as a reference. The hydrochemical data indicate contrasting fluid characteristics. Idung Mancung is strongly acidic and sulfate-rich, consistent with shallow steam-heated water, whereas Sapan Melolong and Semurup 1 exhibit chloride-bearing characteristics and lower Mg concentrations, suggesting greater interaction with deeper geothermal fluids. Semurup 2 shows a more mixed and immature signature, while Kerinci cold water is dominated by bicarbonate and represents a shallow meteoric or peripheral component. Geothermometric estimates vary according to fluid maturity and water type. Semurup 1 yields the most consistent high-temperature indications, with estimated reservoir temperatures generally ranging from approximately 194 to 243 °C, whereas Sapan Melolong indicates moderate-temperature conditions of approximately 169–188 °C. In contrast, cation geothermometer estimates for strongly acidic or immature waters should be interpreted cautiously because of shallow alteration, mixing, and disequilibrium effects. The results indicate that the regional geothermal system contains chemically heterogeneous waters representing steam-heated, deeper chloride-bearing, mixed, and meteoric components. These findings provide a hydrogeochemical basis for understanding subsurface fluid circulation and geothermal potential in the Gunung Kapur region, although direct confirmation of reservoir conditions requires additional site-specific geochemical, geophysical, and subsurface data.

Water-Balance Physics-Informed Neural Network for Daily Streamflow Prediction: A Single-Catchment Comparative Study Using CAMELS-GB v2 Ghifari Maulana Idroes; Nazrul Effendy; Fatimah Zaharany Annissa
International Journal of Hydrological and Environmental for Sustainability Vol. 5 No. 3 (2026): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v5i3.1651

Accurate daily streamflow prediction remains challenging because rainfall–runoff dynamics are nonlinear, temporally dependent, and subject to water-mass conservation. This study examines whether a simplified catchment water-balance constraint improves the internal consistency of a physics-informed neural network (WB-PINN) without compromising predictive accuracy. Using 18,993 daily observations (1970–2022) from Catchment 31010 in CAMELS-GB v2, the WB-PINN jointly estimates discharge, latent storage, and an evapotranspiration scaling factor. Its loss function combines prediction error with a water-balance residual weighted by λ. We evaluated performance on a chronological independent test period (2012–2022) against Ridge regression, support vector regression, XGBoost, a multilayer perceptron, and an LSTM. We tested five physics-loss weights and additional regularization controls to distinguish physical constraints from generic regularization effects. At λ = 0.001, mean validation water-balance loss decreased from 13.69 to 8.22, with nearly unchanged accuracy (NSE 0.8419 versus 0.8433 without the constraint). On the test set, LSTM performed best (NSE 0.8673; RMSE 0.3772 mm/day), while WB-PINN ranked second numerically (NSE 0.8209; RMSE 0.4381 mm/day). Paired bootstrap analysis found no statistically significant differences between WB-PINN and XGBoost or support vector regression, whereas LSTM achieved lower RMSE and higher NSE. Removing antecedent discharge reduced accuracy across all models. Because storage and actual evapotranspiration were unobserved, reduced residuals do not establish hydrological realism. Test-period diagnostics revealed a persistent mean water-balance residual of −0.7070 mm/day and predicted evapotranspiration substantially below the long-term water-balance estimate. Thus, weak water-balance regularization reduced the imposed residual with little loss of predictive accuracy but did not achieve close water-balance closure or outperform the strongest data-driven model.

Page 9 of 9 | Total Record : 86

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Rofiqul Umam

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ijhes.editor.foundae@gmail.com

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Jl. Pramuka Gg. Darfa LK. II, Kel. Langkapura, Kec. Langkapura, Kota Bandar Lampung, Indonesia

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Lampung

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Rofiqul Umam

Contact Email rofiqulumam.geoscience@gmail.com

Phone +6289611586012

Journal Mail Official ijhes.editor.foundae@gmail.com

Editorial Address Jl. Pramuka Gg. Darfa LK. II, Kel. Langkapura, Kec. Langkapura, Kota Bandar Lampung, Indonesia

Location Kota bandar lampung, Lampung INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Rofiqul Umam

Contact Email
rofiqulumam.geoscience@gmail.com

Phone
+6289611586012

Journal Mail Official
ijhes.editor.foundae@gmail.com

Editorial Address
Jl. Pramuka Gg. Darfa LK. II, Kel. Langkapura, Kec. Langkapura, Kota Bandar Lampung, Indonesia

Location
Kota bandar lampung,

Lampung

INDONESIA