In the Arctic, we’ve seen major changes on land, particularly more green vegetation and trees spreading north. Lakes are changing too: their water is getting browner and they are developing more aquatic plants. Some lakes are closely linked to the surrounding land, especially if they’re small, have a large shoreline, or get a lot of inflow. These “landscape-connected” lakes tend to receive more carbon and nutrients from their watersheds. In this study, we use satellite data to understand how lake features like shape, size, and vegetation are related to water quality, especially the amount of carbon. We compare these features to water chemistry data from over 3,000 northern lakes in a new dataset called the Harmonized Arctic-Boreal Lake (HABL) database. We hypothesize that the more connected a lake is to its surrounding land, the more likely it is to show signs of carbon coming from the land, especially as the Arctic warms and greens. Early results show that lake and land vegetation are changing together, especially as plant habitats shift northward. This work helps us understand which lakes are most vulnerable to changes in water quality as the Arctic landscape continues to evolve.