The American company says it stands ready to support the project.
UNON is seeking to revitalize the public face of its 140-acre facility.
The winner will be awarded a cash prize of Sh100,000.
Developers to pay Sh10,000 to Sh40m for environmental audits.
George Mbugua takes over from David Gatende who has retired.
The owners have failed to meet loan restructuring measures.
The facility will hold 15 million cubic metres of water.
The project is funded by EDCF via the Export-Import Bank of Korea.
Atkins was commissioned by Kenya to design the new facility.
Angama Airstrip is being converted into an international airport.