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Otay Water District Gives Burrowing Owl Homes a Makeover

Burrowing owl homes maintained by the Otay Water District received a modern makeover this year. As part of its ongoing environmental mitigation efforts, the District managed construction of new nesting burrows to encourage breeding.

Ten acres of the 240-acre, District-owned San Miguel Habitat Management Area reserve and mitigation bank in eastern Chula Vista is a dedicated native grasslands area where the new artificial burrows are located. The California Department of Fish & Wildlife has designated burrowing owls as a “Species of Special Concern.”

Burrowing owls get a helping hand with new habitat from the Otay Water District. Photo: Otay Water District burrowing owl homes

Otay Water District Gives Burrowing Owl Homes a Makeover

Burrowing owl homes maintained by the Otay Water District received a modern makeover this year. As part of its ongoing environmental mitigation efforts, the District managed construction of new nesting burrows to encourage breeding.

Ten acres of the 240-acre, District-owned San Miguel Habitat Management Area reserve, or HMA, and mitigation bank in eastern Chula Vista is a dedicated native grasslands area where the new artificial burrows are located. The California Department of Fish & Wildlife has designated burrowing owls as a “Species of Special Concern.” They are also protected under the Federal Migratory Bird Treaty Act.

A burrowing owl in an old style burrow prior to remodeling. Photo: Otay Water Districr

A burrowing owl in an old style burrow prior to remodeling. Photo: Otay Water District

In 2019 with CDFW’s guidance, the District began planning for the retrofit of existing artificial burrows and installation of several new burrows with the most current burrow design, intending to allow for maximized breeding success. The project also enhances the value of the native grassland habitat by removing invasive plants that surround most of the artificial burrows.

“The District’s project to enhance the existing burrowing owl habitat is so important because the HMA is a protected area where the owls can safely live and breed,” said Lisa Coburn-Boyd, Otay Water District environmental compliance specialist. “Increasingly, in San Diego County, the burrowing owl population is declining because of habitat loss and fragmentation.”

Small raptors active during the day

Burrowing owls are small owls with bright yellow eyes. Unlike other owls, burrowing owls are active during the day.

Burrowing owls are also quite social. This small raptor lives among others of its own species in loose groups of up to several hundred individuals. They measure seven to 11 inches long and weigh five to nine ounces. Their diet consists of insects, small rodents, amphibian and reptile species, and carrion.

Burrowing owls will take over old mammal burrows as their homes. But in areas where small mammals aren’t present, they will also nest in shallow, underground, human-made structures.

Burrowing owl homes remodeled using new design

This year, the Otay Water District used the updated burrow design recommended by the CDFW and developed by the San Diego Zoo Institute for Conservation Research. Photo: Otay Water District

This year, the Otay Water District used the updated burrow design recommended by the CDFW and developed by the San Diego Zoo Institute for Conservation Research. Photo: Otay Water District

Originally, the District constructed 15 artificial burrows in 2003 as mitigation for impacts to burrowing owl burrows due to reservoir construction and the creation of the former Salt Creek Golf Course. The original burrows used an older design of the artificial burrows and their native grasslands habitat. Although the HMA had regular burrowing owl visitors during that time, breeding success was limited with no owl breeding pairs.

This year, the Otay Water District used the updated burrow design recommended by the CDFW and developed by the San Diego Zoo Institute for Conservation Research. The District retrofitted and enhanced five existing burrows and installed six new burrows. During construction of the burrows in January and February, two burrowing owls seemed interested in the construction. No breeding pairs have used the burrows this season. The District hopes they will be back to move into the newly completed burrows.

See burrowing owls on the San Diego Safari Park’s live webcam.

Cooper’s Hawk Chick Gets Special Handling near Pipeline 5 Project

A Cooper’s hawk chick and its nest received special attention after being discovered recently near a San Diego County Water Authority construction project.

Environmental surveyors spotted the nest on March 27 south of Gopher Canyon Road during the Pipeline 5 repair project in Moosa Canyon in North San Diego County.

Sutherland Reservoir reopens for recreation in 2020 on Friday, March 6. Photo: City of San Diego

Sutherland Reservoir Opens For Recreation

The City of San Diego’s Sutherland Reservoir is now open to the public three days a week. The reservoir will be open Fridays, Saturdays, and Sundays from sunrise to sunset, allowing access for boating, fishing, hiking and picnicking.

It will also open on Memorial Day, Independence Day and Labor Day and is closed the third Friday of each month.

The reservoir is about 45 miles northeast of San Diego at 22018 Sutherland Dam Road in Ramona.

People can hear an updated recorded message detailing current activities, schedules, fishing and hunting results at Sutherland Reservoir and other City of San Diego lakes by calling 619-465-FISH (619-465-3474).

Family activities include picnicking, fishing, and boating

Recreational activities at Sutherland Reservoir including boating, fishing, and picnicking. Photo: City of San Diego

Recreational activities at Sutherland Reservoir including boating, fishing, and picnicking. Photo: City of San Diego

Viviana Castellon, the City of San Diego’s reservoir maintenance supervisor,  said her team opened a little early this morning.

“The environment is beautiful, flora and fauna are raging,” said Castellon. “It’s a healthy environment biologically. It’s a backcountry reservoir, very inviting and relaxing. Depending on what you want to do, we have ADA accessibility. We expect people to have a great time at Sutherland,” said Castellon.

A bonus for spring visitors, Sutherland Reservoir is the midst of raptor mating season.

“Eagles are soaring, and we have peregrine falcons,” she said. “If people bring their binoculars, they’ll hear and see quite a bit.”

The recreation area features barbecues, picnic tables, and restrooms. Self-contained gas barbecues are allowed in the picnic area.

Water activities at Sutherland Reservoir include boating, canoeing, kayaking, sailboarding, and float tubing. Those activities are only allowed on Saturdays and Sundays. Leashed dogs are allowed. Turkey hunting at the reservoir is by reservation only, starting this year on March 30.

One of the most popular activities at Lake Sutherland is fishing. The lake contains largemouth bass, catfish, crappie, sunfish, and carp. Bowfishing is permitted for carp only, in compliance with California Department of Fish and Wildfire regulations. Special conditions apply and are listed on the City of San Diego’s website.

Swimming, ground fires, glass containers, and camping are not permitted. Take precautions to avoid rattlesnakes and poison oak, both of which are present at Sutherland Reservoir.

Maile Guerrero of La Mesa was honored for her photo of Sutherland Reservoir in the Water Authority's "Brought to You By Water' photo contest in 2018.

Maile Guerrero of La Mesa was honored for her photo of Sutherland Reservoir in the San Diego County Water Authority’s 2018 “Brought to You By Water” photo contest.

Construction on Sutherland Dam began in 1927, but it was not completed until 1954. The reservoir is operated and maintained by the City of San Diego’s Public Utilities Department and is part of the city’s drinking water system.

For additional information about Sutherland Reservoir, including boating, fishing, and hunting rules, required permits, as well as details about the City’s other reservoirs, go to sandiego.gov/reservoirs-lakes.