IDPs are grateful for donations from the government and well-wishers, but say jobs would be more helpful to their quest to sustain themselves.
Many turned up for the camp organised by SHOFCO, with cases including injuries, respiratory illnesses, and diarrhoea.
Ruto also announced those affected by the floods in the Kiamaiko area will be given priority for the 5,000 affordable housing units that will be put up in Mathare in a bid to have them settled permanently.
The County Aggregation and Industrial Parks project across 27 counties will cost Sh1.45 billion.
The movement also questioned the glaring absence of a proper evacuation strategy and rapid response teams until Wednesday, highlighting how ordinary citizens, lacking the necessary expertise and equipment, were compelled to conduct search and rescue operations.
Leading the project are local youths who opted to construct a makeshift bridge following the aftermath of the flood's devastation, which left many confined to their homes.
According to the Red Cross, 23 counties are grappling with the aftermath of the floods, affecting 24,741 households.
Two of her grandchildren are still missing after the Tuesday's heavy downpour.