The number of gallons of water that your pool will collect in a rainfall of one inch per hour can be computed as follows:
Cover overall length (ft.) x cover overall width (ft.) x .6234 = gallons per hour

Water Wizard Pool Cover Pump by Little Giant

Original Water Wizard Pumps Up To 1,200 Gallons Per Hour!

The Little Giant Water Wizard is a powerful 1/6 HP pump for you winter pool cover. Only weighing 7 lbs, the Water Wizard is used to drain water out of your pool and pool cover. You can also use it to pump water out of your boat, basement or any area with unwanted standing water.

• Fully submersible and clog resistant
• It will remove water to within 1/8-inch of any surface.
• Comes complete with garden hose adapter and a 25 foot cord.
• 110-120V AC and UL Listed
• 1-Year Limited Warranty.
• Available in standard model (A5000) or with automatic shut-off switch & stabilizing plate (A5005).

Automatic Water Wizard Pumps Up To 1,700 Gallons Per Hour!

All the power of the Little Giant Water Wizard described above, with the addition of an automatic on/off switch. Now your cover pump will automatically turn on as rain accumulates and turn off when the cover is pumped dry. Great for pool draining or lowering pool water level. Comes with 25-feet of cord and garden hose adapter. 

• Activates in approximately 2" of water
  
• 25' power cord
• 270 watts
  
• 1" FNPT discharge w/garden hose adaptor
• Item no. (A5010)

Sta-Rite Trident Pool Cover Pump

This Heavy Duty pump is a continuous duty automatic submersible sump or robust portable utility pump. It has a heavy-duty, energy efficient motor - only 7.5 amps. The pump features a 20' grounded power cord. This automatic submersible pump is ideal for use in heavy-duty utility and sump applications. It pumps up to 7,000 gallons per hour, and has a high-efficiency motor for 40% lower energy cost than most 1/2 HP sump pumps. Inlet screen base has 1/8" openings and is removable for cleaning.

• Built-in check valve.
• High-efficiency motor - 40% lower energy cost.
• 12" high x 6" wide with float, without float 5.5" dia.
• Automatic or Manual operation float switch has piggy back plug.
• 1 1/2" or 1 1/4" Discharge
• LIFETIME WARRANTY

Cover Drain

Economical Siphon Quickly Empties Water Off Your Winter Cover!

The Cover Drain economically pumps the water off your cover without electricity. Squeeze operated pump begins the flow of water and it stops automatically when the cover is drained. The unit comes with drain, pump and siphon and 13-feet of hose. The Cover Drain works on all Above Ground Pools and In Ground pools with a 3 ft elevation drop within 20 feet of your pool's edge. Siphon pumping Cover Drain includes 10 ft of hose.

Rule Pool Cover Pump with Leaf Protector

The Rule Pool Cover Pump helps safeguard and protect your pool cover from prolonged accumulation of rain or melting snow.  It will automatically keep water off your pool cover all year long.

The Rule Pool Cover Pump H53SP-24 features a powerful 110 volt 1800 GPH automatic submersible pump with a specifically designed strainer base that filters out leaves and debris.  The pump is extremely energy efficient and features low water intake, with an innovative solid-state switch design, which activates and deactivates the pump automatically.  Housing is corrosion resistant plastic with 24 ft. power cord.

Features

• Powerful, automatic, fully submersible pool cover pump
• Strainer base filters out leaves and debris
• 1800-gallon-per-hour flow rate
• Installs easily with 3/4" garden hose
• 24-foot power cord built in
  
• 3 year manufacturer warranty

HP Honda Transfer Pump

Gasoline-Powered Transfer Pump for those larger drainage jobs.The Heavy Duty 5.5 HP Honda OHV Series Engine was designed for maximum water removal. Tackle any job fast with this dependable, high quality, easy-to-use machine! Easy portability and great flow capacity allows for hassle-free operation.

Note: Do Not Use in Muratic Acid Conditions. This Pump is used for drainage only. 280 GPM. Now Including Two 3" - 2" Solid Aluminum Reducers Cast Iron Impeller and Inner Pump Case. These pumps were used for years the Cox Pool closing crews. We loved them so much, we started using them for spring openings as well. Pumps Fast!

1 YEAR WARRANTY. Intake Flapper Helps Maintain Prime 3" NPT Inlet and Outlet. Alloy Outer Pump Case