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Welcome to the Official Website for GBW Associates, LLC.

GotBigWater is the official website of GBW Associates, LLC, a privately owned training, consulting, and design firm located in Westminster, Maryland. Our specialty is water supply for public and private fire protection. We at GBW Associates, LLC are known for our training programs, our consulting services, our dry hydrants, and our testing services. Over the years, we have completed projects in over 43 different states and Canada ranging from rural water supply and incident command seminars to ISO water supply assessments to community master planning.
Use the menu at the left to take a look at our services and to contact us. Be sure to check out the News Archive and Big Water Information sections for a whole bunch of information on water supply delivery operations.
Scroll down to see our recent activities, upcoming events, and website updates.
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Be sure to join the Members Area to discuss water supply issues, view our document library, and receive announcement notices concerning our website and our services- it is FREE!
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Upcoming Seminars, Courses, and Drills
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What's On Your Engine #23? - LDH But No LDH Discharge
President Mark Davis, March 05
While going through photos from our 2011 seminar in Dekalb County, Alabama, we found several images demonstrating how to use 5-inch large-diameter hose (LDH) when your pumper does not have an LDH discharge. This is not a new technique, but these photos serve as a useful reminder.
By connecting two smaller hoses from a pair of 2-1/2 inch discharges into an LDH appliance, flow is typically improved ... (Full Story & Photos)
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Hammondville Engine 1 (1250 gpm) was able to draft and support a 1,000 gpm tanker loading site by twinning some smaller lines into the 5-inch LDH.
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One from the early days of dump chute operations.
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What's On Your Tanker #65 - Dump Chutes Revolutionized Water Delivery
President Mark Davis, February 26
The images shown are from the Larry Davis, Jr. Collection and were taken during a water supply class many years ago in Montana. Over the years, many new ideas have been introduced to improve firefighting operations, often with promises of making tasks easier or more effective. However, probably more than half the time, these innovations turn out to be less effective than expected.
The introduction ... (Full Story & Photos)
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Some More From Nikiski, AK - 42 Years Ago - Apparatus Innovations
President Mark Davis, February 19
These photos are from July 1984, documenting collaborative efforts on the Kenai Peninsula in Alaska. Chief Billy Harris, along with personnel from Nikiski and nearby fire departments, focused on improving rural water supply delivery operations. During this period, numerous creative solutions were implemented, and Nikiski received new apparatus to further support these initiatives.
One primary objective ... (Full Story & Photos)
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Engine 411's suction hoist to support one-person operations.
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Perfect!
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Dump Site Operations #40 - Make It Look Like This
President Mark Davis, February 12
Dump tank operations rely on the efficient use of water transfer devices. A common question during our seminars is about the recommended pressure for pumping jet siphons. There is no single answer, as it depends on the specific equipment used. The main objective is to use enough pressure to achieve an efficient flow, similar to what is shown in demonstration photos.
For jet siphons using a 6-inch ... (Full Story & Photos)
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Dump Site Operations #39 - Old School Open Butt Jet Siphon
President Mark Davis, February 05
A few photos from our 2013 seminar in Fitzwilliam, NH at the Meadowood Area Fire Department's Fire Training Center. We were so honored to teach at this facility for it had a whole bunch of history for fire service folks throughout New England. We were sorting some photos and found the ones we took of a water transfer set-up we built using an open-butt end of 1-3/4" hose, a 25-ft length of rope, ... (Full Story & Photos)
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A "hasty-made" jet siphon using some rope and a length of 1-3/4" hose. Worked pretty well - we just don't show it anymore because too many things can go wrong in the execution.
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Large-scale tanker shuttle operations sometimes bring players to the game from far away. Be ready to adapt fill and dump operations on the fly.
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What's On Your Tanker #64 - Be Ready at Both Ends
President Mark Davis, January 29
We spend a fair amount of time in our seminars talking about how best to use apparatus coming to your water supply operation. Folks are generally most familiar with the mutual aid rigs that they commonly run with. It is that once-every-couple years, large-scale tanker shuttle operation where folks can encounter water haulers with which they are unfamiliar. We always say that "you get a pass" the ... (Full Story & Photos)
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Dry Fire Hydrant Design #86 - Another Bridge Mount in Clarendon, Vermont
President Mark Davis, January 22
During the first week of December 2025, we completed another bridge mount dry fire hydrant installation for the Clarendon (Vermont) Volunteer Fire Department. Back in 2017, we installed one of our first systems in Vermont; that one was located on Walker Mountain Road in Clarendon. The 2025, installation involved a bridge privately owned by Casella Construction along Route 133. The unique challenge ... (Full Story & Photos)
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The new installation provides easy access to the Clarendon River along the Route 133 corridor. The installation is an example of excellent cooperative effort by the commercial property owner and the local fire department.
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Another successful installation in South Salem!
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Dry Fire Hydrant Design #85 - Good Work by the South Salem Fire District!
President Mark E. Davis, January 15
Congratulations to the folks at the South Salem Fire District in Westchester County, New York on completing another dry fire hydrant installation. In January 2013, we completed a comprehensive water supply study/ assessment for the fire district. Since then, the fire district and fire department have worked hard to make improvements to their fire protection water supplies; they developed a plan and ... (Full Story & Photos)
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Your questions and feedback are important to us! If you have a question about water supply or pumps or FD stuff in general, join our Members area (for free) to post your inquiry. We will provide our thoughts and perhaps other folks in the field will provide theirs also.
Also - be sure to sign the guest book if this is your first time here - guestbook.
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