The Sriminosari village is a coastal village in East Lampung district that had mangrove forests. Now, mangrove forests of Sriminosari used as a mangrove ecotourism area and will be developed as a form of proper management to ensure the conservation and sustainability of rehabilitation while simultaneously pushing the economy of local communities. The purpose of this research is to calculate the ecotourism suitability index as a support in the development of mangrove ecotourism activities. This research used is survey methods and identification of ecotourism activities is carried out by visual identification and interview. The Observation station is determined by 5 stations are purposive. The results showed that mangrove ecosystem Sriminosari Village in the category of very fit (S1) at 5 stations with index value the suitability of tourism (IKW) at each station that is the station I of 76.92% in category (S1), station II of 89.74% in category (S1), station III of 89.74% in category (S1), station IV of 92.31% in category (S1), and station V of 92.31% in category (S1). The mangrove ecosystem Pandan Alas Sriminosari Village has the potential to be developed as an ecotourism mangrove.

Water was the most important factor, if not managed properly can cause a harm, one of which was flood. Prevention of flood by optimizing drainage channels. The purpose was to review previous research on drainage planning, especially method used to calculate discharge flood design. The methods used were: Rational method, Weduwen method, Haspers method and Melchior method. Determination of each method depends on rainfall data, flow characteristics, and discharge data. Based on review, it was for calculating the design flood discharge was based on the area of the catchment area. The research area that has wide DAS 0

Mangrove Avicennia Marina has important role in wave reduction. The purpose of this research were: (1) To know wave energy ratio in Indah Kapuk Beach and East Lampung Regency, Indonesia. (2) To know the influence of Avicennia Marina mangrove’s respiratory roots on wave energy reduction. Measurement of wave in Indah Kapuk Beach used SBE26, in East Lampung used SBE26 and RBRDUO TD. Parameters were the structure of mangrove vegetation and wave energy reduction. The wave observed in Indah Kapuk Beach tends to be smaller than in East Lampung, so the influence of respiratory root in reducing wave in Indah Kapuk Beach was less visible while the influence of respiratory root in East Lampung was more clearly seen. The muffled wave in the Indah Kapuk Beach research was less visible due to the presence of inhibitors obstructing the incoming waves, while the reduced wave was more clearly measured in the study in East Lampung because without an inhibitors of wave coming.

ABSTRAKPemantauan kualitas air perlu dilakukan pada air sungai, laut, danau, rawa dan tanah sehingga dapat dimanfaatkan sesuai dengan kegunaannya bagi makhluk hidup. Kajian ini bertujuan untuk membandingkan beberapa metode perhitungan indeks kualitas air yang paling efektif, sensitif dan obyektif dalam menentukan status kualitas air permukaan. Metode perhitungan Indeks Kualitas Air (IKA) diperlukan untuk menyederhanakan banyaknya nilai dari berbagai jenis parameter menjadi sebuah angka tunggal yang mampu mendeskripsikan kualitas air, sehingga lebih mudah dipahami oleh masyarakat. Perhitungan IKA dengan menggunakan metode Storet, IP, dan CCME WQI (Canadian Council of Ministers of The Environment) dilaksanakan di beberapa penelitian di berbagai negara. Kajian ini akan membandingkan hasil literatur dari penelitian IKA di beberapa negara. Metode tersebut akan dibandingkan dengan beberapa indikator. Hasil kajian menunjukkan Metode IP lebih unggul jika memakai data tunggal karena memiliki kelebihan dari segi biaya dan waktu, namun hanya mempresentasikan status mutu air pada saat itu saja, tidak dalam periode tertentu. Metode Storet dan CCME menggunakan data perulangan sepanjang waktu (time series data) sehingga menggambarkan status mutu air dalam periode tertentu. CCME WQI lebih unggul dari Metode Storet dan Metode IP karena memperhitungkan besarnya selisih hasil pengujian yang melebihi baku mutu melalui F3 (Amplitude). Dari kajian di atas disimpulkan, Metode CCME merupakan metode yang paling tepat untuk menganalisis kualitas air baik pada air permukaan maupun air tanah dengan tingkat efektivitas dan sensitivitas yang lebih tinggi dibandingkan dengan metode lainnya serta penggunaan jumlah dan jenis parameter yang fleksibel. Kata kunci : Kualitas Air, Indeks Kualitas Air, Air Permukaan PENDAHULUANAir sumber daya alam utama dan aset nasional yang berharga. Selain untuk minum, sumber air memainkan peran penting di berbagai sektor ekonomi seperti pertanian, produksi ternak, kehutanan, kegiatan industri, pembangkit listrik, perikanan dan kegiatan kreatif lainnya. Namun, ketersediaan dan kualitas air baik permukaan atau tanah, telah memburuk karena beberapa faktor seperti meningkatnya populasi, industrialisasi, urbanisasi dan lain-lain (Tyagi et al., 2013). Kenaikan populasi dan industrialisasi menyebabkan permintaan air tawar meningkat dalam dekade terakhir. Permintaan ini khususnya dipenuhi oleh sungaisungai. Namun adanya limbah yang dibuang dari aktivitas manusia dan industri, kualitas air sungai memburuk.Kualitas air merupakan tingkat kondisi cemar atau kondisi baik pada suatu sumber air dalam waktu tertentu dengan membandingkan kualitas air eksisting dengan baku mutu air yang ditetapkan (Kepmen LH No 115 Tahun 2003). Salah satu pendekatan untuk penentuan kualitas air sungai adalah Indeks Kualitas Air (IKA), yang terbukti menjadi metode yang efisien dan berguna untuk menilai kualitas air. Metode ini memberikan KAJIAN PENGGUNAAN METODE IP, STORET, dan CCME WQI DALAM MENENTUKAN STATUS 133 KUALITAS AIR Keempat, penelitian ...

The magnitude of tourism potential and diversity of tourism in Pesisir Barat District, making the attraction for tourists in Pesisir Barat District. It is needed a tourism planning in the mapping of marine ecotourism area in Pesisir Barat District, beauty of nature, and the interest of foreign tourists are not hindered by the attributes - ecotourism attributes that are inadequate for the purpose of the prosperity that has a big impact for the province and the country. The purpose of this research is to design the zoning of marine ecotourism area in Pesisir Barat regency. The method used is Community Based Analysis Method and SWOT Analysis based on Geographic Information System. Based on the analysis, this regency has 30 areas that have the potential to be developed. It can be concluded that special attention is needed from the government in arranging space and territory in natural resources owned by Pesisir Barat regency.