Recorder 



■D.-- 



/ 



Q 



Float 



Stilling Well 



^ Water Level 

 to be Measured 



Orifice Pipe 



d= Water Depth of Orifice 



Dp = lnside Diameter of Orifice Pipe 



D^ = lnside Well Diameter 



Lp= Length of Pipe 



Bottom U 

 sealed 



Figure 2. The linear stilling well. 



