"s low Head Dams 

Welcome come"s low Head Dam security website. The function of this page is come raise awareness and carry out information regarded the areas of short head dams in and also the dangers they current to flow recreationalists. Inspect out the interaction map listed below showing low head dam locations in before you head out on your next river trip. Read an ext about low head dams in our FAQ"s come learn about their role in the river and how to recreate safely. 


Frequently asked Questions What is a short head dam?

Low head dams space engineered structures developed into and across stream and river networks for a selection of purposes. Water flows over short head dams continuously, together they expectations from one riverbank come the other. Short head dams generally range in elevation from 1-15 feet. Historically, short head dams were built to divert water indigenous streams to assistance industrial, municipal, and agricultural water usage. Low head dams are likewise engineered to prevent erosion and degradation of present channels. An ext recently, short head dams have actually been engineered to administer recreational amenities because that boating, rafting and tubing and also to boost aquatic habitat.

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Why room low head dams dangerous?

 Water flowing over low head dams to produce dangerous recirculating currents that have the right to trap recreators. Rafters, kayakers and also those floating ours rivers because that recreation are regularly unaware of this structures and also the risks resulting from them.

Low head dams have the right to be difficult to detect by uneducated river individuals approaching indigenous upstream due to their height, and the reality that the fairly tranquil swimming pool they develop provides no point out of the dangers just past the visual horizon developed by the dam and also ponded water. This have the right to limit reaction time and boaters" capability to exit the river upstream of the dam.



Safety about low head dams

Public safety at short head dams is coming to be an increasingly important issue as the populace of increases and also citizens recreate an ext and an ext on rivers within the state. Initiatives such together the short head dam perform are currently underway to far better identify the hazards, educate the recreating public and also reduce fatalities and injuries at and around this structures. Read an ext about safety ethics on Parks and Wildlife"s Rafting, Kayaking, and also Canoeing page.

What are the categories of low head dams in the Inventory?

The InventoryThe inventory consists of location details for engineered structures in main stem rivers and their major tributaries. Because the inventory walk not encompass structures on all rivers, it must not be taken into consideration an all-inclusive list of all the hazardous structures that may exist.

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The CategoriesEach framework in the inventory was categorized according to physics attributes and purpose. The 3 categories are: Diversion structures, grade manage structures and recreational structures. Some of the structures have actually multiple uses.  

Diversion Structures


Diversion frameworks were built to pond water top top the upstream side to permit some the the water come be delivered to canals and also ditches the then flow away native the river for the plan uses. Once not all water is diverted the continuing to be stream flows end the structures and also returns come the river system. Diversion structures may have actually vertical or sloping downstream faces and can likewise include boat chutes and also fish ladders. Diversion structures space the most hazardous come recreators as they are most most likely to produce inescapable recirculating currents simply downstream of them.

Grade manage Structures


Grade regulate Structures likewise span the broad of streams and rivers and are meant mainly to manage the elevation of the flow channel upstream that the structure by avoiding the erosive process of headcutting. Grade manage structures room engineered to resist erosive forces and also create a new equilibrium in ~ the stream/river reach. Modern grade regulate structures room sloped to protect against the breakthrough of recirculating currents that could trap boaters, making castle somewhat less hazardous than diversion structures.


Recreational Structures


These structures are specifically to plan to provide recreational amenities and many towns and also cities in now have river parks and play feet which attract tourists and also locals alike. Fisheries biologists have likewise constructed fish habitat frameworks such together J-hooks and cross veins in countless rivers and streams. As recreational amenities, this structures room designed to carry out a funny river experience and also are thus considered the least hazardous in the inventory.