Doug and Chrissy Small are struggling to feed their 340 cows with a third of their dairy farm alongside Lake Omapere near Kaikohe flooded by recent rain.
They claim the lake's sole outlet is clogged with grass and debris and a contractor who cleared it in the past had told them it would cost $1500 for a digger to remove the debris, which would lower the lake 300mm daily and clear floodwaters from their farm in three days.
The Maori-owned lake is administered by the Lake Omapere Trust. The trust is understood to support a claim Kaikohe kaumatua Ron Wihongi has lodged with the Waitangi Tribunal, seeking restoration of the lake to the area it had before blasting of the outlet twice last century lowered the water level to allow railway tracks to be laid close to the lake.
Now trains no longer run from Kaikohe to Okaihau, Mr Wihongi and other Maori believe raising the water level would cure algae bloom and ease other problems afflicting the shallow 1200ha lake.
Mr Wihongi told the Advocate farmers with properties bordering Lake Omapere had for many decades had free use of about 280ha of shoreline land which lay within the lake before the water level was lowered.