webmaster@ecan.govt.nz, Author at Erosion & Sediment Control Toolbox For Canterbury - Page 7 of 8

February 15, 2026

Coastal erosion protection works (Source: SouthernSkies).

Coastal erosion protection works

February 10, 2008

Portable rainfall activated dosing system for decanting earth bunds and sediment retention ponds.

Coagulants and flocculants: Rainfall activated

February 10, 2007

Coagulants and flocculants: Flow activated

February 10, 2010

Dirty water will receive flocculent treatment when it flows across a floc sock in the channel upstream of DEB. Note the concrete wingwalls which ensure that the floc sock is not outflanked.

Coagulants and flocculants: Floc socks

February 10, 2009

Coagulants and flocculants: Batch dosing

February 10, 2006

A flow-activated system delivers precision dosing of dirty water flows into sediment retention tools (Source: RST Solutions Limited).

Coagulants and flocculants

February 10, 2003

Check dams

February 10, 2004

Bores

Bores

February 10, 2009

Agriculture and tilling