Pentwater Lake

{{Short description| Lake in the state of Michigan, United States}}

{{Infobox body of water

| name = Pentwater Lake

| image = Pentwater, MI 49449, USA - panoramio (3).jpg

| alt =

| caption = The western section of the lake

| image_bathymetry =

| alt_bathymetry =

| caption_bathymetry =

| location = Oceana County, Michigan

| coords = {{coord|43.7692095|-86.4212561|region:US-MI_type:waterbody|format=dms|display=inline,title}}

| type =

| inflow = Pentwater River

| outflow = Pentwater Lake Channel

| catchment =

| agency =

| length = {{Convert|1.8|mi|km|abbr=on}}

| width = {{Convert|4756|ft|km|abbr=on}}

| area = {{Convert|431|acre|ha|abbr=on}}

| depth = {{Convert|27|ft|m|abbr=on}}

| max-depth = {{Convert|50|ft|m|abbr=on}}

| volume = {{Convert|15900|acre-ft|abbr=on}}

| residence_time =

| shore = {{Convert|6.2|mi|abbr=on}}

| elevation = {{convert|581|feet|abbr=on}}{{cite gnis|1621204|Pentwater Lake}}

| frozen =

| pushpin_map = Michigan#USA

| islands =

| cities = Pentwater

| reference =

}}

Pentwater Lake is a water body adjacent to the village of Pentwater, Michigan. Its primary inlet is the Pentwater River; its outlet is a man-made channel flowing into Lake Michigan.

Pentwater Lake has a surface area of {{convert|431|acres}}, a maximum depth of {{convert|50|feet}}, and an average depth of {{convert|27|feet}}. The lake contains {{convert|11,590|acre feet}}, a volume of water that would cover {{convert|18|sqmi}} to a depth of {{convert|1|foot}}. Its shoreline is {{convert|6.2|miles}} long.