Lgeria Analysis Laboratory of Water Sources, Soil and Environment, Department of Civil Engineering, Faculty of Civil Engineering and Architecture, Amar Telidji University, Laghouat 03000, Algeria; [email protected] (M.C.); [email protected] (Z.A.) Division of Civil Engineering, College of Engineering, Taif University, Taif 21974, Saudi Arabia; [email protected] Agricultural Engineering Division, Faculty of Agriculture, Mansoura University, Mansoura 35516, Egypt; [email protected] College of Environmental and Resource Betamethasone disodium In Vitro Sciences, Zhejiang University, Hangzhou 310058, China Division of Civil and Environmental Engineering, Federal University of Para a, Jo Pessoa 58051-900, Brazil; [email protected] National Water Study Center, Shubra El-Kheima 13411, Egypt; [email protected] Correspondence: [email protected]’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations.Abstract: Understanding of behavior, variability, and hyperlinks among hydrological series is often a important element for profitable long-term water sources planning and management. Within this study, different time-scale-based strategies including correlation and spectral analysis (CSA), cross wavelet (XWT), and wavelet coherence transform (WCT) had been applied to assess the response of daily rainfall and karst spring discharge for the Sebaou River basin, which is located on Mediterranean basin in northern Algeria. The CSA revealed that the hydrogeological systems beneath study are characterized by numerous memory effect (little, poor, decreased, and in depth) with regularization times ranging from five to 50 day. XWT in between rainfall and discharge time series indicates handful of marked disruptions within the spectra among the 1980s and 1990s corresponding to the dry period. The annual approach is visible, dominant, and much more amplified in comparison to the multi-annual fluctuations that characterize the 1-3and 3-year modes, which explained the multi-annual regulation. The nonlinear partnership with the short-term components seems to be linked for the periods of storage (infiltration). In comparison to the WCT elements of 2, 26, and 52 weeks, there is a strong coherence for 102 weeks, which explains the long-term component, indicating a quasi-linearity of the rainfall-runoff relationship. In line with the obtained outcomes, the construction of much more water sources Goralatide site structures is advisable to increase the water storage and boost the water provide due to the richness of your hydrographic network. On the other hand, the impacts of human activities on streamflow because of the looting of rocks and sands within the Sebaou River valleys have reached alarmingly higher levels that call for urgent intervention for the protection of water and ecological resources and their far better rational use. Key phrases: spectral evaluation; wavelet coherence; karst springs; hydrogeological; human activities; AlgeriaCopyright: 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access short article distributed under the terms and conditions of your Inventive Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ four.0/).1. Introduction Karst is often a land with exceptional shapes and drainage. A worn enhanced porous zone referred to as epikarst is situated around the surface, but in the subterranean you’ll find networks of fractures, splits, and conduits of all sizes and shapes, which comprise an very and complicated active hydrologoelogical s.