Pumping Irrigation Water from a Stream or Pond: Feasibility, Permits, and Costs

I have a creek 12–22 inches deep behind my property and want to pump water 150 feet to irrigate my lawn. What type of pump do I need, and is this practical?

Calculate Your Water Needs

A lawn needs about 600 gallons per 1,000 sq ft per week. For a 10,000 sq ft lawn, that's 6,000 gallons weekly.

Measure Stream Flow Rate

Determine flow by measuring water velocity (ft/sec) and cross-sectional area (sq ft). Multiply for cubic feet per second. Example: a 4-ft wide, 1-ft deep stream flowing at 0.25 ft/sec yields 1 cu ft/sec (8 gal/sec). Only withdraw up to 25% of total flow (2 gal/sec) to protect aquatic life.

Match Pump to Demand

An impact sprinkler uses ~4 gal/min. Six heads = 24 gal/min. If your stream exceeds this, choose a pump. 220V electric pumps ($200–$350) are cheaper and easier to maintain than gas ($400–$600), but require electrical installation. Consult a pump/irrigation dealer with your flow, distance, and elevation data.

Legal and Regulatory Hurdles

Permits are likely required. Georgia DNR regulates stream withdrawals to protect wildlife. A 25-ft state stream buffer applies. Installing a pump may need permits from GA EPD and the Army Corps of Engineers. Unauthorized withdrawal can bring heavy fines.

Cost Reality Check

Total system (pump, power, piping, backflow preventer, valves, heads) likely exceeds $1,000. City water costs ~$3.50/1,000 gallons. Weigh savings against hassle and expense.

See also: Irrigation of Lawns and Gardens | Lawn and Garden Irrigation