<p>The river flow data serves as the primary information for water resource planning, water management design, water supply, irrigation, flood control, and river ecosystem preservation. The current research aimed to analyze hotspots and spatial correlations of values of indices extracted from the flow duration curves. In this regard, initially, the flow duration curves corresponding to the hydrometric stations of Ardabil province were plotted, followed by the extraction of flow values with different exceedance probabilities from the river flow duration curves. Spatial distribution of the studied indices was analyzed using the Getis-Ord-Gi statistic. Additionally, Anselin Local Moran’s I was employed for clustering and hotspot determination. The spatial distribution of hot and cold spots revealed that in most of the studied indices, the Borran watershed exhibited high-high clustering (HH), while other watersheds lacked a discernible clustering pattern. Based on the results, most of the studied watersheds exhibited negative Moran's I values, indicating dissimilarity and absence of clustering. The Q₇₅ index assigned hotspots to the PolSoltani and Mashiran watersheds, respectively, while Aladizgeh and Nanekaran watersheds formed cold spots, with the remaining watersheds lacking a significant pattern. The analysis of hotspots revealed that in most of the examined indices, the Mashiran watershed was classified as hotspots. Additionally, the Polsoltani watershed was categorized as hotspots based on the values of the Q₈₅ and Q₉₀ indices. Watersheds such as Sola, Aladizgeh, Anbaran, Namin, Nanekaran, and Iril were identified as cold spots based on the Q₈₅ and Q₉₀ indices. As a concluding remark, it can be stated that the majority of cold spots are located in the eastern part of Ardabil province. The results can be utilized in the spatial analysis and correlation of the indices extracted from the Flow duration curve of the river.</p>