Retention Ponds Research Articles

Evaluation of the Offsets of Artificial Recharge on the Extra Run-Off Induced by Urbanization and Extreme Storms Based on an Enhanced Semi-Distributed Hydrologic Model with an Infiltration Basin Module

Urbanization and climate change exacerbate groundwater overexploitation and urban flooding. The infiltration basin plays a significant role in protecting groundwater resources because it is a prevalent technology of managed aquifer recharge. It could also be utilized as a retention pond to mitigate city waterlogging. The goal of this study was to explore the offsets of artificial recharge on the extra runoff induced by urbanization and extreme storms via infiltration basins. To achieve this objective, a lumped infiltration basin module was developed and integrated into a semi-distributed hydrologic model. Then, the enhanced model was applied to an agriculture watershed with urban areas. Finally, the functionalities of the infiltration basins were evaluated under the scenarios of the predicted urbanization and extreme storms. The results demonstrated the capability of the infiltration basins to influence both artificial recharge and flood mitigation. To mitigate floods, especially peak flows, larger areas are needed for infiltration basins than for artificial recharge purposes only. Based on different demands, the intermittent regulation of infiltration basins according to different hydrologic periods is recommended. The offsets of artificial recharge on the extra surface runoff provide insight into the comprehensive preservation and management of surface water resources and groundwater resources.

Design of Retention Pond Kacang Pedang Area as a Water Tourism Recreation Using Water Sensitive Urban Design

The issue of changes in natural conditions, Pangkal Pinang City as a downstream area of the Baturusa Watershed (DAS) with a city center whose city morphology is a basin resulting in Pangkal Pinang City receiving excessive water runoff, plus land deforestation due to illegal mining in the upstream river which is directly adjacent to the Regency Central Bangka which causes excessive sedimentation and poorly connected drainage channels. The existence of high rainfall intensity and the uncontrolled capacity of the retention pond causes the water level to rise which then flows into the retention pond area. As a result, the Rangkui river causes excessive water runoff, resulting in floods that spread to residential areas and the center of Pangkal Pinang City. The purpose of this study was to provide design concepts for the retention pond area using the Water Sensitive Urban Design method as a strategy for urban water management, particularly in the region of raw water sources. The design process is a fragmented one that starts with a collection of regional design-related problems and ends with a simulation of regional design. Recreational, residential, and educational activities will all be accommodated within the design area’s 94 hectares. The design of the area will focus on urban design elements combined with normative principles, namely land use, intensity and building, circulation and parking, pedestrian ways, open spaces, signage, preservation, and activity support. In addition, the design simulation will also focus on the water management system in the area with a WSUD technical approach that is directed to focus on efforts to infiltrate rainwater and provide rainwater storage containers, both in open spaces, green areas, and buildings.

Temporal Dynamics of Phytoplankton in Retention Pond as a Water Source for Striped Catfish (Pangasianodon hypophthalmus) Farming

Temporal Dynamics of Phytoplankton in Retention Pond as a Water Source for Striped Catfish (Pangasianodon hypophthalmus) Farming

Rob Flood Control on the North Coast of Java (Study on coastal areas of Pekalongan and Semarang)

Flooding on the coasts of Pekalongan and Semarang, North Coast of Java (Pantura), has become a severe problem for the Indonesian government. Factors causing the flood are rainfall, climate, land subsidence and rob, river conditions, tidal influence, poorer areas, land change, inappropriate flood control, damage to flood control buildings, excessive groundwater utilization, inappropriate flood management, river sedimentation, reduced water catchment areas, and runoff floods. Therefore, there is a need for an appropriate handling study to deal with these problems. This research aimed to determine the achievements of coastal flood control on the North Coast of Java. Data was collected through a literature review for secondary data, field studies for primary data, in-depth interviews with relevant stakeholders, and observation. The results showed that handling Rob flooding in coastal Pekalongan focuses on four locations: Bremi River, Meduri River, Mrican pump house, and Silempeng. Rob flood handling methods on the Pekalongan coast include the construction of concrete barriers with corrugated sheet pile (CCSP), compacted soil embankments with bamboo mattress reinforcement, and submersible pumping machines at the Mrican pump house. In comparison, rob flood management in coastal Semarang focuses on the Sringin and Tenggang rivers. The flood handling methods conducted are the provision of pumps, construction of Rob embankments and retention ponds, normalization, drainage improvements, and interconnection channels. However, handling coastal flooding needs a comprehensive and sustainable follow-up.

Study on the depth of cantilever sheet pile wall based on the type of soil where sheet pile embedded

The northern part of Semarang is known as a region having a thick depth of soft clay. In the construction of sheet pile wall for Terboyo Retention Pond dike Semarang must take into account stability aspect and financial aspect. The characteristic of granular soil is different from that of cohesive soil, and the stability aspect relies on the type of soil. This study aims to investigate the influence of the type of soils where sheet pile embedded to the theoretical depth of cantilever sheet pile wall. This research used the soil data from Terboyo Retention Pond of Semarang. Modelling of wall was differentiated based on the type of soil where sheet pile embedded whereas the type of soil above the dredge line was the same. Two type of soils where sheet pile embedded, clay and sand were modelled. The variation of soil parameters of both soils was also modelled. Safety factor for clay soil was taken 1.5. The result shows that different soil in which wall embedded give significant difference of length of sheet pile. Based on N-SPT, with the same N-SPT value theoretical depth of cantilever sheet pile wall in sand soil is deeper than that of in clay soil.

Feasibility Assessment and Environmental Benefits of Developing Rainwater Retention Ponds Across Najran Valley

Feasibility Assessment and Environmental Benefits of Developing Rainwater Retention Ponds Across Najran Valley

Machine Learning Application to Optimize Spent Mushroom Compost (SMC) Biochar as Filter Media for Heavy Metal Adsorption in Abandoned Mine Water

AbstractThe surging global population strains resources, escalating pollution, and exacerbating water scarcity. Sustainable water management necessitates alternative sources such as abandoned mine water. However, these sources often contain hazardous heavy metals, like lead, copper, iron, and manganese, posing grave health and environmental risks. Conventional methods struggle to effectively treat these heavy metals in abandoned mining ponds, urging the search for cost‐efficient and sustainable solutions. Biochar, particularly from spent mushroom compost (SMC), emerges as a potent adsorbent due to its high surface area and binding groups. Yet, the variability in its efficiency remains a challenge. Conventional empirical models fail to capture the dynamic nature of adsorption processes accurately. Adopting machine learning, specifically an adaptive neuro‐fuzzy inference system (ANFIS), shows potential in predicting adsorption efficiency. This study aims to employ ANFIS to forecast SMC biochar's performance in a lab‐scale metal retention pond, providing design charts for diverse initial metal concentrations and pH levels. Validation through real cases aims to enhance accuracy and establish a framework for future heavy metal adsorption capacities. This research offers a sustainable approach to removing heavy metals from abandoned mining ponds whereas the computational modeling in optimizing SMC biochar introduces a novel approach for practical applications.

Features of the highway road network that generate or retain tyre wear particles.

The environmental accumulation of microplastics poses a formidable global challenge, with tyre wear particles (TWPs) emerging as major and potentially harmful contributors to this particulate pollution. A critical pathway for TWPs to aquatic environments is via road drainage. While drainage assets are employed worldwide, their effectiveness in retaining microplastics of highly variable densities (TWP ~ 1-2.5g cm3) remains unknown. This study examines their ability to impede the transfer of TWPs from the UK Strategic Road Network (SRN) to aquatic ecosystems. Samples were collected from the influent, effluent and sediments of three retention ponds and three wetlands. The rate of TWP generation is known to vary in response to vehicle speed and direction. To ascertain the significance of this variability, we further compared the mass of TWPs in drainage from curved and straight sections of the SRN across eight drainage outfalls. Pyrolysis gas chromatography-mass spectrometry (Py-GC-MS) was used to quantify tyre wear using benzothiazole as a molecular marker for TWPs (with an internal standard benzothiazole-D4). Tyre wear was present in drainage from the SRN at concentrations of 2.86 ± 6mg/L and was found within every sample analysed. Drainage from curved sections of the SRN contained on average a 40% greater TWP mass than straight sections but this was not significant. The presence of wetlands and retention ponds generally led to a reduction in TWP mass (74.9% ± 8.2). This effect was significant for retention ponds but not for wetlands; most probably due to variability among sites and sampling occasions. Similar drainage assets are used on a global scale; hence our results are of broad relevance to the management of TWP pollution.

Planning For Kucica Residential Drainage System in South Tangerang City Using SWMM Modelling

Planning an efficient drainage facility in residential areas is necessary to drain run-off water on the surface. To minimize the potential for inundation that can cause flooding. This research aims to design an efficient drainage system in one of the residential areas in BSD and to analyze the ability of drainage channels using the EPA SWMM 5.1 application for a 10-year return period. The results of this study for secondary channels with a maximum discharge plan of 0.101 m3/s can use a U-Ditch with dimensions of 30 cm × 40 cm, while primary channels with a maximum discharge plan of 0.288 m3/s can use a U-Ditch with dimensions of 40 cm × 60 cm. In this analysis only taking into account rainwater run-off from household sewage is not taken into account. In the main channel, using retention pond only can reduce around 12% of maximum discharge, so the alternative of flood prevention for this residential area can be implemented by using bio pore holes, which reduce 27.85% of maximum discharge. From these analyses, it can be concluded that the drainage system design can already accommodate the flood discharge, and adding retention pond does not affect decreasing flood discharge on the main channel too much.

OPTIMIZATION OF RETENTION POND IN FLOOD CONTROL EFFORTS IN PEKANBARU (URBAN FLOOD SYSTEM IMPROVEMENT PROJECT)

This research aims to optimize the function of retention ponds as part of the urban flood control improvement project in Pekanbaru. Evaluation was conducted on the capacity and efficiency of retention ponds, with a focus on spatial distribution, sustainability, and environmental impact. The findings of this study provide a foundation for formulating concrete and data-driven improvement recommendations. The spatial distribution of retention ponds is crucial in understanding their effectiveness in mitigating flood risks. Evaluation of the actual capacity of retention ponds provides an overview of their ability to accommodate excess rainwater, while efficiency identifies factors for enhancement and improvement. Improvement recommendations include increasing capacity, implementing advanced technology, and developing data-driven solutions. Involving stakeholders, including local government, research institutions, and the community, is a strategic step to ensure successful implementation. The application of sensors and geographic information systems (GIS) can enhance the effectiveness of retention pond operational management. Sustainability of solutions is realized through routine maintenance, performance monitoring, and multi-stakeholder collaboration. This research significantly contributes to urban flood management in Pekanbaru by providing concrete, data-driven recommendations for the retention pond system.

The Nature-Based Solutions and climate change scenarios toward flood risk management in the greater Athens area—Greece

AbstractThis research paper focuses on implementing two Nature-Based Solutions (NBS) in the Sarantapotamos river basin upstream of Magoula settlement, evaluating their effectiveness through flood hydrograph calculations before and after NBS, and under future climate scenarios, encompassing lower, mean, and upper conditions representing ± 95%. The study area covers an area of 226 km2 in Attica, Greece, susceptible to extreme flood events. The research contributes to NBS knowledge, emphasizing flood resilience and protecting settlements downstream. Land cover change and retention ponds, applied individually and combined, serve as NBS approaches. Flood hydrographs are calculated using the time–area (TA) diagram method in a geographic information system (GIS) with the Hydrological Engineering Center’s Hydrological Modeling System (HEC-HMS). Results demonstrate NBS effectiveness in current climate conditions, reducing peak discharge by 9.3% and 28% for land cover change and retention ponds, respectively. The combined NBS achieves a 40.5% peak discharge reduction and a significant 15.7% total flood volume decrease. Under climate change scenarios, impacts on design precipitation and flood hydrographs vary. The upper climate change scenario exhibits a 3348% increase in peak discharge and a 600% rise in total flood volume, while the lower scenario sees a 44.6% reduction in total flood volume. In the mean climate change scenario, land cover change and retention ponds reduce peak discharge by 9.73% and 23.11% and total flood volume by 9.25% and 2.17%, respectively. In conclusion, retention ponds show substantial peak discharge reduction, while land cover changes extend the time to peak, emphasizing their potential in flood risk management.

Economic assessment of nature-based solutions to reduce flood risk and enhance co-benefits

Flooding is expected to increase due to climate change, urbanisation, and land use change. To address this issue, Nature-Based Solutions (NBSs) are often adopted as innovative and sustainable flood risk management methods. Besides the flood risk reduction benefits, NBSs offer co-benefits for the environment and society. However, these co-benefits are rarely considered in flood risk management due to the inherent complexities of incorporating them into economic assessments. This research addresses this gap by developing a comprehensive methodology that integrates the monetary analysis of co-benefits with flood risk reduction in economic assessments. In doing so, it aspires to provide a more holistic view of the impact of NBS in flood risk management. The assessment employs a framework based on life-cycle cost-benefit analysis, offering a systematic and transparent assessment of both costs and benefits over time supported by key indicators like net present value and benefit cost ratio. The methodology has been applied to the Tamnava basin in Serbia, where significant flooding occurred in 2014 and 2020. The methodology offers valuable insights for practitioners, researchers, and planners seeking to assess the co-benefits of NBS and integrate them into economic assessments. The results show that when considering flood risk reduction alone, all considered measures have higher costs than the benefits derived from avoiding flood damage. However, when incorporating co-benefits, several NBS have a net positive economic impact, including afforestation/reforestation and retention ponds with cost-benefit ratios of 3.5 and 5.6 respectively. This suggests that incorporating co-benefits into economic assessments can significantly increase the overall economic efficiency and viability of NBS.

Study on the Impact of Land Use Changes Caused by IKN Development on Sanggai River Flood Discharge

In 2019, President Joko Widodo implemented a political policy to relocate the capital of the Republic of Indonesia from DKI Jakarta to Penajam Paser Utara Regency and Kutai Kartanegara Regency. Construction has commenced and will be executed in several stages until 2045. The primary development stage will concentrate on the Central Government Core Area (KIPP). The relocation of the National Capital poses several potential problems, one being the risk of inundation and flooding. The government aims to minimize this risk by creating green areas covering up to 70% of the total area of IKN. Additionally, the government is constructing flood control infrastructure, including retention ponds, check dams, bottom controllers, and other structures. One of the rivers that flows through KIPP is the Sanggai River, covering a catchment area of 19.3 km2 with a river length of 9.8 km. This research will discuss the impact of IKN development on the Sanggai River Catchment Area, focusing on proposed changes in land use and alterations in flood discharge within this river. Furthermore, the study will investigate the influence of constructing flood control buildings (retention ponds and bottom controllers) using modeling on HEC-RAS. The objective of this research is to assess the effectiveness of flood control structures and estimate the potential for flood inundation.

Change in the Rivedbed Due to Regulator Gate on the Loji River

The city of Pekalongan, located in the northern part of Java Island within Central Java Province, faces challenges such as floods and tidal inundation originating from the runoff of the Loji River, exacerbated by tides due to land subsidence and changes in land use. To address these issues, the government, through BBWS Pemali Juana, has undertaken a technical study on flood control, involving the construction of normalization, regulator gates, moveable weirs, and retention ponds along the Loji River. This study aims to analyze the changes in the riverbed resulting from the development initiatives on the Loji River. The analysis employs HEC-RAS 1D to assess alterations in sedimentation patterns within the river. The outcomes of the constructed interventions on the Loji River reveal notable changes in the riverbed, characterized by increased sedimentation and erosion. This research serves a crucial role in providing valuable input to the government for policymaking related to planning, implementation, and monitoring, grounded in the principles of integrated water resources management.

Assessment of Retention Ponds and Its Impacts on Health of Residents in Mogadishu, Somalia: Mixed Methods

Assessment of Retention Ponds and Its Impacts on Health of Residents in Mogadishu, Somalia: Mixed Methods

Lake Water Quality Assessment Based on Multispectral Unmanned Aerial Vehicle Images and In-Situ Testing

In recent years, Universiti Tun Hussein Onn Malaysia has experienced several developments in buildings and road construction. A stormwater retention pond was built as a part of the construction plan to prevent the occurrence of floods downstream of the development sites. However, poor monitoring and maintenance of the pond caused water contamination, which had bad effects on the nearby environment and lake ecosystem. Therefore, this study was conducted to assess the current water quality in the pond by using a combination between Multispectral Unmanned Aerial Vehicle images and in-situ sampling. Four water quality parameters were investigated, namely turbidity, dissolved oxygen, temperature, and pH. Aerial images were taken using a multispectral aerial mapping camera attached to UAV. The in-situ testing was performed on the same day of image capturing at 5 different locations. According to the results, it was found that the pH and water temperature were within the normal levels with maximum and minimum values of 7.34 and 6.94 for pH and 28.39oC and 28.04oC for temperature, respectively. Turbidity readings appaired with a significant variation with a maximum value of 30.9 NTU at the lake outlet and a minimum value of 18.8 NTU at the middle of the lake. Dissolved oxygen concentration was noticed to be low, with an average value of 4.3 mg/l. Water quality mapping showed the concentration distribution of each water quality parameter along the lake surface. In each map, the differences in terms of colours were found to be not significant because of the size of the lake, which is relatively small, as well as because of the small differences in terms of water quality ridings at each sampling point.

Characteristics and Management of Drainage Infrastructure in Medan Sunggal District, Medan City

Climate change, characterized by high-intensity rainfall, coupled with inadequate drainage systems, small and shallow river dimensions, and a lack of community awareness, has caused flooding and inundation in Medan Sunggal District. This study aims to understand the characteristics and management of drainage infrastructure in Medan Sunggal Subdistrict, Medan City, to identify its characteristics and implement suitable management efforts. The research adopts a positivism paradigm with a positivistic approach, relying on empirical facts (sensual empiricism). The research methodology used is purely qualitative descriptive, focusing on an in-depth understanding related to the characteristics, context, and research subjects. Data collection methods include Guest Tour and comparative techniques. The results of this study show that the characteristics of drainage infrastructure in the study area form a network pattern. The types of channels in the study area are primary channels, secondary channels, and tertiary channels. They consist of artificial channels with open concrete construction, located above the ground with a combined drainage system. While most of the physical conditions are good, some exhibit minor damage. A significant portion of the drainage water is stagnant. Flood-prone areas constitute 41%, areas with infrequent flooding are at 43%, and areas that have never experienced flooding are at 16%. Management recommendations for the study area include providing green open spaces, creating biopore infiltration holes, constructing detention and retention ponds, using paving blocks/grass blocks, conducting maintenance (normalization and rehabilitation) of drainage, and involving the community in each management aspect.

ALTERNATIF PENGENDALIAN LIMPASAN PERMUKAAN DI PERKOTAAN DENGAN MENGGUNAKAN METODE ANALYTICAL HIERARCHY PROCESS (AHP)

Control of surface runoff is a major challenge in sustainable urban stormwater management. High rainfall can cause various problems such as floods and landslides. Related to the problem of surface runoff includes a number of problems that require attention and good solutions to maintain environmental sustainability and prevent negative impacts from surface runoff. Surface runoff control activities generally tend to be social, technically costly, and relatively long. Collaboration with experts, government, and local stakeholders can also reinforce the concept of successful surface runoff control. The application of the AHP (Analytical Hierarchy Process) method is needed as a systematic approach to evaluate and select effective alternative surface runoff control systems, in this study four alternatives were taken based on three criteria. These alternatives involve solutions such as the application of biopores of infiltration wells, rainwater harvesting, retention ponds and green open spaces then these alternatives are evaluated based on relevant criteria, in this study the relevant criteria are taken namely technically, environmentally and cost. The results of this analysis using the AHP method provide relative priority values for each alternative, allowing for the selection of optimal solutions to surface runoff problems. Based on this assessment, it shows that alternative green open space is an optimal solution for surface runoff control systems in urban areas.

Stormwater reuse for water-sensitive city - Integrated analysis of urban hydrology for efficient alternatives of Amaravati city, India.

In the present study, Amaravati, a proposed city of Andhra Pradesh, India, is identified for stormwater reuse analysis and for various efficient options for reuse. Peak runoff from the entire catchment is determined for the management of stormwater using different models such as soil and water assessment tool (SWAT), stormwater management model, and intensity-duration-frequency curves by the log Pearson Type III method. Further, the bio-retention cell low-impact development option with 60% impervious area, 60% zero depression impervious area, bio-retention cell for 40% area for each sub-catchment, and the underground stormwater network system, for part of peak runoff reduction, remaining peak runoff is considered for reuse. The remaining peak runoff is proposed to be reused for irrigation purposes (option 1), and storage retention ponds as extended detention ponds (option 2). Also, in situ storage/percolation is recommended for unaccounted stormwater within or around each premise. The findings can help to propose, implement, and maintain various stormwater reuse measures and/or practices for any city.

Methane Production from a Rendering Waste Covered Anaerobic Digester: Greenhouse Gas Reduction and Energy Production

Livestock wastes can serve as the feedstock for biogas production (mainly methane) that could be used as an alternative energy source. The green energy derived from animal wastes is considered to be carbon neutral and offsetting the emissions generated from fossil fuels. In this study, an evaluation of methane production from anaerobic digesters utilizing different livestock residues (e.g., poultry rendering wastewater and dairy manure) was carried out. An anaerobic continuous flow system (15 million gallons, polyethylene-covered) subjected to natural conditions (i.e., high flow rate, seasonal temperatures, etc.) containing poultry rendering wastewater was set up to evaluate methane potential and energy production. A parallel pilot-scale plug-flow anaerobic digestion system (9 m3) was also set up to test different feedstocks and operating parameters. Biogas production was sampled and monitored by gas chromatography over several months of operation. The results showed that methane production increased as the temperature increased as well as depending on the type of feedstock utilized. The covered rendering wastewater lagoon achieved an upward of 80% (v/v) methane production. The rates of methane production were 0.0478 g per g of COD for the poultry rendering wastewater and 0.0141 g per g of COD for dairy manure as feedstock. Hence, a poultry processing plant with a rendering wastewater flow rate of about 4.5 million liters per day has the potential to capture about two million kilograms of methane for energy production per year from a waste retention pond, potentially reducing global warming potential by about 50,000 tons of CO2 equivalent annually.