2026 Forest River Cascade20OGC

The Cascade 20OGC has 2,861 lbs of cargo capacity between 8,349 lbs dry and its 11,210 lbs GVWR, 26% of that rating; filling its 40-gallon fresh tank at 8.3 lb a gallon uses 332 lbs of it (how to read trailer weights).

Tongue weight is 1,010 lbs, 12% of the dry weight as published; it rises as the trailer is loaded and counts against the tow vehicle’s tongue-weight and payload limits (tongue weight by size).

Off hookups: 80 gallons of grey and black capacity against 40 gallons of fresh water, so fresh water runs out first (tank sizes by length).

Against the rest of the Cascade roster this is the 14th of 16 floorplans by dry weight, in a line that runs from 2,604 lbs to 11,327 lbs. It sits in the heavier third of the line.

Plan the tow on loaded weight, not the 8,349 lbs dry figure: half the published cargo capacity brings this plan to about 9,779 lbs, and the published GVWR of 11,210 lbs is the limit (how to read trailer weights).

Forest River’s line listing and this floorplan’s own factory page agree on all 4 shared figures. Dry weight plus cargo capacity equals the published GVWR exactly. A missing row means Forest River does not publish that figure (how figures are verified).

Forest River publishes no floorplan description for this plan in the channel this page is built from - only the numeric specification block. Rather than describe a layout from the floorplan code, which would be a guess dressed as a fact, this page carries what the factory publishes and says where it stops. 20OGC is a Cascade designation and this site does not decode it into a layout claim.

How the 20OGC differs from the other fifteen Cascade floorplans. Most distinctive first. How these ranks are worked out.

• Dry weight, 8,349 lb: third-heaviest of sixteen, between the 301BHC (8,063 lb) and the 39TNC (8,885 lb).
• GVWR, 11,210 lb: third-highest of sixteen, between the 29TEC and 301BHC (9,995 lb) and the 39TNC (13,140 lb).
• Tongue weight, 1,010 lb: third-heaviest of sixteen, between the 301BHC (960 lb) and the 39TNC (1,140 lb).
• Cargo capacity, 2,861 lb: fourth-largest of sixteen, between the 39DLC (2,015 lb) and the 26LPC (3,002 lb).
• Cargo capacity as a share of GVWR, 25.5%: fifth-largest of sixteen, between the 23MSC (23.5%) and the 29TEC (30.5%).
• Length, 35 ft 8 in: fifth-longest of sixteen, between the 27LHC (33 ft 2 in) and the 29TEC (36 ft 6 in).
• Exterior height, 13 ft 6 in: tallest of sixteen, level with the 39DLC; next is the 39TNC (12 ft 9 in).
• Grey tank, 40 gal: largest of sixteen, level with the 39DLC and 39TNC; next are the 23MSC, 26KFC and five others (38 gal).
• Black tank, 40 gal: largest of sixteen, level with the 39DLC and 39TNC; next are the 23MSC, 26KFC and four others (38 gal).
• Tongue weight as a share of dry weight, 12.1%: shared with the 17MPHC; of sixteen, six smaller and eight larger, nearest the 301BHC (11.9%) and the 14BHLPC and 26LPC (12.3%).
• Fresh tank, 40 gal: shared with the 39DLC and 39TNC; of sixteen, six smaller and seven larger, nearest the 14BHLPC, 17LPC and two others (26 gal) and the 23MSC, 26KFC and five others (52 gal).

Next to the 301BHC, the nearest lighter floorplan by dry weight, the 20OGC is 286 lb heavier by dry weight, has a GVWR 1,215 lb higher, has 929 lb more cargo capacity, has a tongue weight 50 lb heavier, is 1 ft 7 in shorter, stands 2 ft 5 in taller, has a fresh tank 12 gal smaller, has a grey tank 2 gal larger and has a black tank 2 gal larger.

Next to the 39TNC, the nearest heavier floorplan by dry weight, the 20OGC is 536 lb lighter by dry weight, has a GVWR 1,930 lb lower, has 1,394 lb less cargo capacity, has a tongue weight 130 lb lighter, is 4 ft 11 in shorter and stands 9 in taller; the two publish the same fresh tank, grey tank and black tank.

Cascade covers a wider span than any other Forest River travel-trailer line this site has catalogued: thirty-three published floorplans in five factory groupings - single axle, tandem axle, tandem-axle toy hauler, fish house and destination - running from 2,604 lb dry at 17 feet 3 inches to 11,327 lb at 42 feet 8 inches. Tongue weight runs 320 to 1,342 lb over that span. The grouping a plan belongs to predicts its class far better than its floorplan number does, so both are in the table below.

A full 40-gallon fresh tank is about 332 lb of water (water counts as cargo: 49 CFR 571.120 S10.4.2), 12% of the 20OGC’s 2,861 lb cargo capacity, leaving 2,529 lb. Across 16 Cascade floorplans the water share runs 8% to 32%, and 14 give up more than this one. Nearest on that share: Cascade 39TNC at 8% and Cascade 17MPHC at 12%. Your own unit’s figure is on the label inside its entry door (49 CFR 571.120 S10.4.3).