Watershed management with potential water resources greater than or equal to 20% of the potential of water resources in the province requires a device capable of addressing those needs. The Siak river area is a potential source of water resources greater than 20%. Until now, the Siak river area does not yet have an integrated water resource information system; thus information on the potency of water absorption cannot be adequately recorded. Prediction of water availability in watersheds has significance for the management of a watershed. The research aims to develop a hydrological model to strengthen the water availability information to complete the water availability information. The built model is a combination of a conceptual model with wavelet (hybrid model) that is wavelet-ihacres. The wavelet transform method has the advantage of decomposing and reconstructing the data to produce better predictions. The results showed that the combined wavelet-ihacres have a coefficient correlation between observation data and output model of 0.737. The value is classified as a strong correlation.

Mint plants are generally grown on a small scale and are found growing wild in mountainous areas and in damp and watery places. This plant is able to adapt to tropical climates so that it can be cultivated. The purpose of this article is to provide counseling on how to cultivate mint leaves and use them as a fresh and healthy health drink at SMP IT Khazanah Boarding School. The method used is to provide counseling and practice it directly, how to cultivate and utilize mint plants as a fresh drink. Planting mint can be done by cutting existing plants. The trick is to cut the stalk about 1 cm above the branching. Then, remove some of the leaves on the stalks and submerge them in a container. Mint leaves have a distinctive spicy taste, fresh scent and have various benefits for the body, such as refreshing breathing, calming digestion, boosting immunity, and others. As for how to use it as a fresh drink for health which is combined with several ingredients such as Mint leaves, Lemons or Lime that have been cleaned, Honey or Sugar, and Hot Water. Then the lemons are cut into thin strips, then honey is added and the boiling hot water is poured into the container, then the mint leaves are dipped, and let stand for a moment so that the mint and lemon flavors are stronger then they can be served and drunk in warm conditions. The results obtained were that the teachers and students were very enthusiastic about participating in the community service activities carried out by the Riau University lecturer team from start to finish and almost all participants were excited to try planting, making drinks and enjoying fresh drinks from mint leaves.