Olivenhain Dam

{{Use mdy dates|date=August 2023}}

{{More citations needed|date=February 2025}}

{{Infobox dam

| name = Olivenhain Dam

| image = OlivenhainDamByPhilKonstantin.jpg

| image_caption = Olivenhain Dam and reservoir in 2011 as seen from a helicopter

| name_official =

| dam_crosses = None

| location = Escondido, California

| dam_type = Gravity

| dam_length = {{convert|2400|ft|m|abbr=on}}

| dam_height = {{convert|318|ft|m|abbr=on}}

| dam_volume = {{convert|1300000|m3|ft3|abbr=on}}

| dam_width_base =

| spillway_type =

| spillway_capacity =

| construction_began = {{start date and age|1998}}

| opening = {{start date and age|2003}}

| status = In use

| cost = $203 Million USD

| owner = San Diego County Water Authority and Olivenhain Municipal Water District

| res_name = Olivenhain Reservoir

| res_capacity_total = {{convert|24000|acre.ft|m3|abbr=on}}

| res_catchment =

| res_surface = {{convert|200|acre|km2|abbr=on}}

| res_max_depth = {{convert|300|ft|m|abbr=on}}

| plant_operator =

| plant_turbines =

| plant_capacity =

| plant_annual_gen =

| plant_commission =

| plant_decommission =

| location_map =California

| location_map_caption =

| location_map_size =

| coordinates = {{coord|33|04|12|N|117|08|18|W|type:landmark|display=inline,title}}

| website = {{URL|https://www.sdcwa.org/projects-programs/facilities/olivenhain-dam-reservoir/}}

| extra =

}}

Olivenhain Dam is a gravity dam near Escondido, California, United States. The dam was constructed between 1998 and 2003 as part of San Diego's Emergency Storage Project with the primary purpose of water supply for municipal use. It does not sit on a river or stream but is supplied with water by a system of pumps and pipes. The dam is connected to Lake Hodges and the Second San Diego Aqueduct. It is constructed of roller-compacted concrete and is the first of its type in California.

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