Reusable Silt Dam

Abstract

A reusable silt dam having an open frame that defines a generally rectangular prism interior open space, and a series of separate, generally flat, generally rectangular filters arranged side-by-side in the interior, to fill at least most of the interior with filter media.

1 . A reusable silt dam, comprising:
 an open frame that defines a generally rectangular prism interior open space; and   a series of separate, generally flat, generally rectangular filters arranged side-by-side in the interior, to fill at least most of the interior with filter media.   
     
     
         2 . The reusable silt dam of  claim 1  in which the frame comprises a plastic member. 
     
     
         3 . The reusable silt dam of  claim 1  in which the frame comprises one or more stake-receiving anchoring members, to allow the silt dam to be staked to the ground. 
     
     
         4 . The reusable silt dam of  claim 3  in which the stake-receiving anchoring members project outwardly from the open frame. 
     
     
         5 . The reusable silt dam of  claim 1  further comprising interlocking features on the frame that allow for temporary releasable interconnection of two adjacent silt dams. 
     
     
         6 . The reusable silt dam of  claim 5  in which the interlocking features comprise one or more “T”-shaped slots on one end of the frame and one or more “T”-shaped projections on the other end of the frame. 
     
     
         7 . The reusable silt dam of  claim 1  further comprising a transition frame that defines a generally triangular or trapezoidal footprint and when connected between two silt dams allows the two silt dams to be located at an angle to one another. 
     
     
         8 . A silt dam system, comprising:
 a plurality of generally aligned silt dams, each silt dam comprising:
 an open frame that defines a generally rectangular prism interior open space and has two ends, with interconnection structures on each end that are constructed and arranged to allow the ends of two frames to be temporarily connected; and 
 a series of separate, generally flat, generally rectangular filters arranged side-by-side in the interior of each frame, to fill at least most of the frame interiors with filter media; 
   wherein adjacent silt dams are interconnected via the interconnection structures, to present an essentially continuous line of filters.   
     
     
         9 . The silt dam system of  claim 8  further comprising a transition frame that defines a generally triangular or trapezoidal footprint and when connected between two silt dams allows the two silt dams to be located at an angle to one another.