Abstract: A culvert has an attachment at an entrance end for inhibiting beaver activity at the culvert where the attachment includes two panels coupled together at one end by a third panel portion or by a hinge to form a pivotal structure with each panel including a bottom rail placed on a ground surface extending from the culvert entrance and a plurality of upstanding bars at spaced positions along the bottom rail. The attachment is opened at the hinge line or the third panel portion so that the hinge line is located in front of the entrance with each panel extending back to a respective side of the entrance and fastened by a chain coupling to that side. The upstanding bars are arranged so that water passes therebetween to or from the entrance end and the bars are closely spaced so as to prevent passage of beavers to the entrance end.

Abstract: A culvert has an attachment at an entrance end for inhibiting beaver activity at the culvert where the attachment includes two panels coupled together at one end by a third panel portion or by a hinge to form a pivotal structure with each panel including a bottom rail placed on a ground surface extending from the culvert entrance and a plurality of upstanding bars at spaced positions along the bottom rail. The attachment is opened at the hinge line or the third panel portion so that the hinge line is located in front of the entrance with each panel extending back to a respective side of the entrance and fastened by a chain coupling to that side. The upstanding bars are arranged so that water passes therebetween to or from the entrance end and the bars are closely spaced so as to prevent passage of beavers to the entrance end.

Abstract: A beaver control device for use with a culvert pipe features a tubular frame having opposing longitudinal ends which are open and a plurality of openings spaced angularly about the frame. The openings provide alternative paths, in addition to the open ends of the frame, for water to pass through the device in an event that one of the open ends become obstructed. The device also features a plurality of transverse bars spanning across transversely opposing portions of an inner surface of the frame. The transverse bars are spaced along a longitudinal length of the frame and elevated relative to a bottommost edge of the frame which rests on the ground. The transverse bars are closer to the bottommost edge than to a topmost edge of the frame which is vertically opposite same. Elevating and spacing the transverse bars as described deters the beaver from passing through the device.

Abstract: A beaver control device for a culvert pipe features a generally conical screen having a base portion and an apex portion connected by a plurality of rods. The base portion has a rim sized to fit about the end of the culvert pipe. The apex portion has a rim with an opening sized to selectively receive a weeping tile or other drainage pipe. The screen prevents beavers from damming the culvert while allowing the drainage pipe to drain into or pass through the culvert. A pin is provided to either lock the drainage pipe in place or partially close off the opening in the apex portion when not in use. The screen is movable between raised and lowered positions to allow easy access to the screen and culvert. In one embodiment, the screen is constructed in multiple pieces to allow for easy transport and on-site assembly.

Abstract: A beaver control device for a culvert pipe features a generally conical screen having a base portion and an apex portion connected by a plurality of rods. The base portion has a rim sized to fit about the end of the culvert pipe. The apex portion has a rim with an opening sized to selectively receive a weeping tile or other drainage pipe. The screen prevents beavers from damming the culvert while allowing the drainage pipe to drain into or pass through the culvert. A pin is provided to either lock the drainage pipe in place or partially close off the opening in the apex portion when not in use. The screen is movable between raised and lowered positions to allow easy access to the screen and culvert. In one embodiment, the screen is constructed in multiple pieces to allow for easy transport and on-site assembly.