Erdfallsee

{{Infobox lake

| name = Erdfallsee

| image = Erdfallsee Hopsten 2.jpg

| caption =

| image_bathymetry =

| caption_bathymetry =

|pushpin_map=North Rhine-Westphalia

| coords = {{coord|52|20|57|N|7|37|29|E|region:DE-NW_type:waterbody_source:dewiki|display=inline,title}}

| type =

| inflow = none

| outflow = none

| catchment =

| basin_countries = Germany

| length = {{convert|320|m|abbr=on}}

| width = {{convert|120|-|140|m|abbr=on}}

| area = {{convert|7|ha|abbr=on}}

| depth =

| max-depth = {{convert|12|m|abbr=on}}

| volume =

| residence_time =

| shore =

| elevation = {{convert|44|m|abbr=on}}

| frozen =

| islands =

| cities =

| reference =

}}

Erdfallsee is a lake in Hopsten, Kreis Steinfurt, North Rhine-Westphalia, Germany. At an elevation of 44 m, its surface area is 7 ha.