The Appellation Profile

Image from Wikipedia
Image from Wikipedia

Cucamonga is located in San Bernardino County, about 45 miles east of Los Angeles. The storied Cucamonga Valley (aka. Cucamonga-Guasti Wine District) – where vineyard planting began in 1838 – has lost most of its once vast vineyard acreage to industrial development and the urban expansion of nearby Los Angeles and Orange Counties. When Prohibition hit in 1920, grapevine acres in Cucamonga numbered twice as many as Napa/Sonoma Counties combined. In the 1940s, this east/west oriented valley region hosted 60 wineries and over 35,000 acres of vine, as its thick-skinned grapes with high natural sugar levels proved ideal for the needs of east coast home winemakers.

Today, only three of the original winegrowing family wineries and less than 1,000 vineyard acres remain. The loss of vineyard land continues and some of the nation’s oldest vines could disappear. The value of Cucamonga goes beyond the quality of its vines, as the region is also home to a strong tradition of unique fortified wines, including a highly regarded Triple Cream Sherry made by its smallest producer, the Biane winemaking family’s Rancho de Philo. But survivors persevere and, since the region became an AVA in 1995, the two major wineries, Galleano and Joseph Filippi, have focused on producing premium wines. Long time Temecula Valley winemakers including Etienne Cowper (Mount Palomar Winery), Joe Hart (Hart Winery) and Jon McPherson (South Coast Winery) have also experienced success with Cucamonga Valley fruit.

The area’s red wines, derived mainly from old vines including Alicante Bouschet, Carignane, Cinsault, Grenache, Mission, Mourvedre and Zinfandel, showcase the concentration of fruit character typical of Cucamonga. With summer temperatures often exceeding 100 degrees F., wines are generally rich and jammy with a strong earthy dimension. The sandy alluvial valley floors, rocky fans and terrace soils of the area help to reduce the risk of Pierce’s disease which has plagued surrounding areas. However, the AVA has not been completely immune to the effects of Pierce’s and a moderate number of old vines have been lost to this plague.

Over the past decade, however, the Filippi family has successfully replanted over 50 acres of new vines in the foothills of Rancho Cucamonga (including Cabernet Franc, Merlot, Mourvedre, Syrah, Petite Sirah and Zinfandel). Additionally, a further 100 plus acres will be planted in Cucamonga through 2009.

The Walker Family Vintners and the Cucamonga Valley Vintners Cooperative have contributed to the rebuilding of the Cucamonga grapevine heritage in the last six years. While our contributions have not added great acreage, they have certainly increased the number of vines planted at various homes throughout the Cucamonga, Riverside, and Claremont area. To date, the total number of vines we have planted are well in excess of 500…to include Zinfandel, Sangiovese, Petite Sirah, and Cabernet Sauvignon. 


The Cucamonga Valley approved viticultural area (AVA) is located in San Bernardino and Riverside Counties, California. The boundary is as follows (see map that follows): 

(1) The beginning point is the intersection of Euclid Avenue and 24th Street on the Mt. Baldy, Calif. U.S.G.S. map; 

(2) From the beginning point, the boundary follows 24th Street east for approximately 0.3 mile, until it reaches the intersection of 24th Street with two unnamed light-duty streets to the north; 

(3) The boundary then diverges from 24th Street and goes straight north for approximately 0.3 mile, until it reaches the 2,000 foot contour line; 

(4) The boundary then follows the 2,000 foot contour line in a generally easterly direction across the Cucamonga Peak, Calif., U.S.G.S. map and onto the Devore, Calif., U.S.G.S. map until it reaches Lytle Creek Wash; 

(5) The boundary follows the intermittent stream in Lytle Creek Wash in a southeasterly direction to the end of the intermittent stream on the Devore, Calif., U.S.G.S. map; 

(6) The boundary then continues through Lytle Creek Wash, proceeding southeast in a straight line from the end of the intermittent stream, across the southwest corner of the San Bernardino North, Calif., U.S.G.S. map and onto the San Bernardino, South, Calif., U.S.G.S. map, to the northernmost point of the flood control basin at the end of the Lytle Creek Wash, a distance of approximately 4.3 miles; 

(7) The boundary then proceeds in a straight line south-southeast across the flood control basin to the point where Lytle Creek Channel exits the basin; 

(8) The boundary continues along Lytle Creek Channel until it empties into Warm Creek; 

(9) The boundary then follows Warm Creek until it meets the Santa Ana River; 

(10) The boundary then follows the western edge of the Santa Ana River in a generally southwesterly direction until it meets the San Bernardino—Riverside County line; 

(11) The boundary follows the county line west, crossing onto the Guasti, Calif., U.S.G.S. map, until it reaches the unnamed channel between Etiwanda and Mulberry Avenues (identified by the petitioner as Etiwanda Creek Channel); 

(12) The boundary then follows Etiwanda Creek Channel in a southerly direction until it parallels Bain Street; 

(13) The boundary then diverges from Etiwanda Creek Channel and follows Bain Street south until it ends at Limonite Avenue in the northeast corner of the Corona North, Calif., U.S.G.S. map; 

(14) The boundary then continues south in a straight line until it reaches the northern shore of the Santa Ana River; 

(15) The boundary then follows the north shore of the Santa Ana River until it intersects the 560 foot contour line in Section 1 T3S/R7W; 

(16) The boundary then follows the 560′ contour line to the north of the Santa Ana River in a generally westerly direction until it reaches Euclid Avenue on the Prado Dam, Calif., U.S.G.S. map; 

(17) The boundary then follows Euclid Avenue north to the point of beginning. 

[T.D. ATF–362, 60 FR 16578, Mar. 31, 1995]