Hills Creek Reservoir

{{Use American English|date=February 2025}}

{{Infobox body of water

| name = Hills Creek Reservoir

| image = Hills Creek Reservoir aerial.jpg

| caption = Aerial view

| image_bathymetry =

| caption_bathymetry =

| location = Lane County, Oregon

| coords = {{coord|43|40|16|N|122|25|33|W|region:US-OR_type:waterbody|display=inline,title}}

| type = Reservoir, mesotrophic

| inflow = Middle Fork Willamette River

| outflow = Middle Fork Willamette River

| catchment = {{convert|389|mi2|km2}}

| basin_countries = United States

| length =

| width =

| area = {{convert|2735|acre|ha|lk=on}}

| depth = {{convert|130|ft|m}}

| max-depth = {{convert|299|ft|m}}

| volume = {{convert|356000|acre feet|m3}}

| residence_time = 1.4 months

| shore = {{convert|32|mi|km}}

| elevation = {{convert|1545|ft|m}}

| cities = Oakridge

| pushpin_map = Oregon#USA

| pushpin_label_position =

| pushpin_map_alt = Location of Hills Creek Reservoir in Oregon, USA.

| pushpin_map_caption =

| website =

| reference={{cite book|last=Johnson|first=Daniel M.|author2=Petersen, Richard R. |author3=Lycan, D. Richard |author4=Sweet, James W. |author5= Neuhaus, Mark E., and Schaedel, Andrew L. | title=Atlas of Oregon Lakes|publisher=Oregon State University Press|location=Corvallis|year=1985|page=86|isbn=0-87071-343-4}}{{cite web|title=Atlas of Oregon Lakes: Hills Creek Lake (Lane County) |url=http://aol.research.pdx.edu/?q=lake/362|publisher=Portland State University|year=1985–2012|accessdate=January 5, 2013}}{{cite web | url ={{gnis3|1158881}} | title = Hills Creek Lake | work=Geographic Names Information System|publisher = United States Geological Survey|date=May 22, 1986 |accessdate = January 5, 2013}}

}}

Hills Creek Reservoir, also known as Hills Creek Lake, is an artificial impoundment behind Hills Creek Dam on the Middle Fork Willamette River in the U.S. state of Oregon. The lake is near Oakridge in Lane County about {{convert|40|mi|km}} southeast of Eugene, at the confluence of Hills Creek with the Middle Fork. The reservoir and its watershed lie within the Willamette National Forest.

The U.S. Army Corps of Engineers created the lake in 1961 when it built the dam, primarily to control floods and generate hydroelectricity. Since then, the lake has become a popular recreation site with parks, boat launches, and a fishery.

Hills Creek was named for John J. Hill, who settled near the mouth of the creek in 1870. The dam and lake take their names from the creek.{{cite ogn|7th|page=468}}