Pengelolaan Daerah Aliran Sungai (DAS) Ciliwung

Summary

The video discusses the management of the Ciliwung River Basin (DAS Ciliwung) in Indonesia, emphasizing the importance of maintaining its ecological balance. The river flows through West Java and DKI Jakarta, providing water for irrigation and urban areas. The script highlights the impact of urbanization, land-use changes, and increased population density on the river's water flow and flood risk. It underscores the need for proper land use planning, tree planting, and water harvesting techniques to preserve the basin's health and ensure sustainable water resources for future generations.

Takeaways

• 😀 Watershed (DAS) is an area where water drains into a common outlet like a river, lake, or ocean, consisting of the main river and smaller tributaries.
• 🌍 The Ciliwung Watershed covers 378 km² and spans approximately 120 km, with three distinct parts: upstream (Hulu), middle (Tengah), and downstream (Hilir).
• 🌱 Human activities like urbanization and agricultural land conversion have significantly altered the hydrology of the Ciliwung Watershed, leading to increased flooding risks.
• 💧 The Ciliwung river has different hydrological characteristics at each section, with steep slopes in the upstream and flatter terrain in the downstream, affecting water flow and runoff.
• 🏞️ Climate in the Ciliwung region is characterized by high rainfall from December to February and dry periods from July to August, impacting river flow and water availability.
• 🚧 Increased urbanization reduces water absorption capacity, leading to higher surface runoff, increased erosion, and a higher risk of flooding, especially in densely populated downstream areas.
• 🌊 The conversion of agricultural land to non-permeable surfaces (like housing) decreases the ability to manage water effectively, leading to poor irrigation and fluctuating water levels during different seasons.
• 🌳 Effective management of the Ciliwung Watershed requires sustainable practices, such as tree planting, well-maintained infiltration wells, and proper zoning to balance conservation and development needs.
• 📉 Erosion and surface runoff are exacerbated by the lack of green spaces and poor land management, significantly impacting flood control and agriculture in the region.
• 💼 Strong institutional governance and land-use planning are essential for the protection of the watershed and ensuring the sustainability of agriculture, water resources, and urban growth.
• 📢 Public involvement and education on the importance of watershed conservation are crucial for maintaining the health of the Ciliwung Watershed and preventing further environmental degradation.

Q & A

What is the main focus of the video script?

The main focus of the video is on the management and characteristics of the Ciliwung River Watershed (DAS), including the impact of land use changes, hydrological conditions, and the role of the watershed in flood prevention and water conservation.

What is a Watershed (DAS) according to the script?

A Watershed (DAS) is defined as a land area that drains rainwater into a river system, which includes the main river and its smaller tributaries. This area functions to collect and channel rainwater towards a lake or sea.

What are the three main sections of the Ciliwung Watershed?

The three main sections of the Ciliwung Watershed are the upstream (hulu), midstream (bagian tengah), and downstream (hilir), each with specific observation stations for river flow monitoring.

Why is the Ciliwung Watershed strategically important?

The Ciliwung Watershed is strategically important because it spans two provinces, West Java and DKI Jakarta, and plays a crucial role in water management for these regions, including flood control and water supply.

What are the main challenges facing the Ciliwung Watershed?

The main challenges facing the Ciliwung Watershed include urbanization, land-use changes, reduced agricultural land, and decreased water infiltration, which contribute to flooding and water supply issues.

How does land use change affect the Ciliwung Watershed?

Land use changes, especially the conversion of agricultural land into residential areas, reduce water infiltration, increase surface runoff, and contribute to higher flood risks and the degradation of hydrological balance.

What are the hydrological characteristics of the Ciliwung Watershed?

The Ciliwung Watershed experiences high rainfall, especially between December and February, and has a rapid response to rainfall, which causes quick increases in river discharge. The watershed's topography varies, with steeper areas in the upstream and more flat areas in the downstream.

What impact does increased urbanization have on the Ciliwung Watershed?

Increased urbanization leads to more impervious surfaces, reducing natural water absorption and increasing surface runoff, which amplifies flood risks and affects water quality and availability.

What is the role of water harvesting in managing the Ciliwung Watershed?

Water harvesting plays a role in managing the watershed by capturing surface runoff to increase water storage, which can help reduce flood risks and ensure a more stable water supply, especially during dry periods.

What solutions are proposed to address the issues in the Ciliwung Watershed?

Proposed solutions include tree planting, maintenance of water infiltration wells, proper land-use planning, and strengthening institutional frameworks to manage the watershed sustainably and reduce environmental degradation.