VANCOUVER, BRITISH COLUMBIA -- (Marketwire) -- 11/21/12 -- Riverside Resources Inc. (TSX VENTURE:RRI)(PINKSHEETS:RVSDF)(FRANKFURT:R99) ("Riverside" or the "Company") is pleased to announce initial drill results from the 2012 diamond drill program at the Lennac Project in central British Columbia (BC). Strong intervals of copper-porphyry mineralization have been returned from the first two drill-holes - LLDH-12-001 and LLDH-12-002 - drilled at the West Zone. This is one of a number of targets on the Lennac property and Riverside along with investing partner, Antofagasta Minerals S.A., continue to progress porphyry copper targets in British Columbia.

Drill-hole LLDH-12-001 intersected Cu-Au mineralization over its entire length, returning 0.189% Cu and 0.033 g/t Au over 345.9 metres. Drill-hole LLDH-12-002 was collared 470m north-northwest of LLDH-12-001 and returned 0.164% Cu and 0.023 g/t Au over 445.5m with mineralization again intersected from surface to the bottom of the hole.

Table 1: Assay results for LLDH 12-001 and LLDH 12-002

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                From         To   Interval         Cu         Au         Mo
Hole ID           (m)        (m)        (m)        (%)      (g/t)      (ppm)
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LLDH-12-001     4.50     350.40     345.90      0.189      0.033       34.3
Including     117.00     131.62      14.62      0.340      0.054       68.5
Including     264.00     282.00      18.00      0.401      0.046       30.0
LLDH-12-002     4.50     450.00     445.50      0.164      0.023       40.2
Including     158.00     175.58      17.58      0.361      0.043       98.3
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Riverside's President and CEO, John-Mark Staude, commented, "We are very pleased with our progress in this Exploration Alliance with major copper producer, Antofagasta Minerals S.A. British Columbia exploration work this season produced encouraging results and several targets were identified at Lennac and Flute for further drilling and exploration in the coming months and through 2013." Staude added, "Riverside is currently reviewing a number of additional prospects in BC and building a strong portfolio with partner Antofagasta."

Drill-holes LLDH-12-001 and LLDH-12-002 were drilled to test copper porphyry mineralization at the historically identified West Zone within the main Lennac Trend. Mineralization occurs as disseminated and vein controlled chalcopyrite and pyrite within potassically altered intrusives and volcanics similar to other Cu-Au porphyry systems in the region including the Huckleberry, Bell and Granisle mines. The Lennac Trend covers a greater than 3km trend of copper-porphyry showings made up of the West Zone, East Zone and Southeast Zone. A favorable aeromagnetic signature suggests the trend may continue under shallow cover for over 6 km along strike. Continuity of mineralization along the trend was explored through recent prospecting and top-of-bedrock reverse circulation (RC) drill testing by Riverside.

Historic drilling at the West Zone was limited to a shallow (less than 100m total depth) reverse-circulation drilling and 5 deeper diamond drill-holes completed between 1973 and 1974; several of the historic diamond drill-holes terminated in mineralization. The 2012 diamond drill-holes tested the extent and continuity of the copper porphyry mineralization to depth and along strike using two widely spaced drill-holes as a first pass to assessing the broader potential of this target area on the large Lennac property land package.

LLDH-12-001 was drilled due north at a -70 angle; LLDH-12-002 was collared 470m north-northeast of LLDH-12-001 and drilled due south at a -70 angle. A total of 800.4m of drilling were completed at the West Zone over the 2012 season. Drill-holes LLDH-12-003 and LLDH-12-004 tested prospective areas at the East Zone - located over a kilometer to the east of the West Zone. Final results from the diamond drilling at the East Zone are still pending.

Click the following link to view a drill-hole location map of the diamond drilling completed at Lennac (Diamond drilling on Lennac Property): http://rivres.com/diamond-drilling-on-lennac-property

Click the following link to view RC drilling locations from the summer exploration and an updated map of the Lennac and Flute properties (Antofagasta Alliance Page): http://rivres.com/projects/strategic-alliances/item/antofagasta?category_id=5

Qualified Person:

The scientific and technical data contained in this news release pertaining to the Lennac Project were prepared under the supervision of Paola Chadwick, P.Geo. - BC Exploration Manager, a non-independent qualified person to Riverside, who is responsible for ensuring that the geologic information provided in this news release is accurate and acts as a "qualified person" under National Instrument 43-101 Standards of Disclosure for Mineral Projects.

About Riverside Resources Inc.:

Riverside is a well-funded prospect generation team of focused, proactive gold discoverers with the breadth of knowledge to dig much deeper. The Company currently has more than $7,000,000 in the treasury and 35,200,000 shares issued. The Company's model of growth through partnerships and exploration looks to use the prospect generation business approach to own resources, while partners share in de-risking projects on route to discovery. Additional property information can be found on the Company's website at www.rivres.com.

ON BEHALF OF RIVERSIDE RESOURCES INC.

Dr. John-Mark Staude, President & CEO

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.