how did minnesota lakes fill up water?

Sarah, you must have left something out of the question. It makes no sense as written. You need to clarify the question.

glaciers??

Minnesota lakes are filled with water through a variety of natural processes. The main source of water for these lakes is precipitation, which includes rainfall, snowfall, and even groundwater. Here is a step-by-step explanation of how Minnesota lakes fill up with water:

1. Precipitation: The first step is precipitation. When it rains or snows in Minnesota, water falls from the atmosphere and enters the various lake basins across the state.

2. Runoff: Once the precipitation reaches the ground, it flows downhill due to gravity. This is called runoff. It collects in streams, rivers, and other waterways, eventually making its way into the lakes.

3. Drainage Basins: Lakes are typically part of larger systems called drainage basins or watersheds. These basins are an area of land where all the water (including precipitation runoff) drains into a common outlet, which in this case is the lake. As water flows downhill, it collects in small streams, which merge to form larger rivers, eventually feeding into the lake.

4. Groundwater: Another important source of water for Minnesota lakes is groundwater. Groundwater is the water that resides beneath the Earth's surface, in the soil and permeable rock layers known as aquifers. When it rains or snows, some of the water infiltrates into the ground, recharging these aquifers. Over time, this groundwater seeps into the lakes, keeping them filled.

5. Natural Springs: In certain cases, lakes can also be fed by natural springs. Springs occur when groundwater flows naturally to the surface, providing a constant source of water to the lake.

It's important to note that the water levels in lakes can fluctuate due to factors such as evaporation, human activities, climate patterns, and changes in rainfall or snowfall patterns.