EDIT: MacBoero beat me to it...
I know you are not asking for high-bypass turbofans, but I find this video pretty spectacular:
YouTube - GE90-115B Gas Turbine Jet Engine Testing & Evaluation
Given the 4.5 ton/minute total water ingestion they've tested, one could use the 9:1 bypass ratio and the turbine stages still ingest 400 liters (106 gallons) of water per minute!
I'm sure you cannot compare that to your turboshaft engine, but it gives you an idea.