Analisis Morfometri Sub-DAS Kali Madiun untuk Menentukan Potensi Infiltrasi Cekungan Air Tanah (CAT) Ngawi-Ponorogo
DOI:
https://doi.org/10.29408/geodika.v10i2.34358Keywords:
CAT Ngawi-Ponorogo, Imbuhan, Morfometri, Sub-DAS Kali MadiunAbstract
Penelitian ini dilatarbelakangi oleh belum tersedianya data terintegrasi tentang morfometri dan potensi infiltrasi sub-DAS Kali Madiun di Cekungan Air Tanag (CAT) Ngawi-Ponorogo untuk mendukung pengelolaan airtanah berkelanjutan. Penelitian ini bertujuan menganalisis karakteristik morfometri dan potensi infiltrasi sub-DAS Kali Madiun di CAT Ngawi-Ponorogo, Jawa Timur. Teknik pengumpulan data dilakukan melalui pengunduhan DEMNAS beresolusi 8 m dan peta administrasi wilayah dari Badan Informasi Geospasial (BIG), yang kemudian diolah dan dianalisis menggunakan Sistem Informasi Geografis (SIG) untuk menghitung parameter morfometri utama, meliputi aspek linear, areal, dan relief. Hasil menunjukkan kerapatan dan frekuensi sungai yang rendah, serta nilai infiltrasi 1,05 yang menandakan potensi infiltrasi sangat tinggi. Analisis relief memperlihatkan dominasi lereng datar hingga landai, sehingga sebagian besar sub-DAS menjadi zona imbuhan airtanah. Integrasi analisis morfometri dan spasial ini menjadi dasar penting pengelolaan dan konservasi sumber daya air, serta dapat direplikasi untuk memperkuat strategi ketahanan airtanah di DAS lain di Indonesia.
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