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Combined display of all available logs of ASDSO Dam Safety Toolbox. You can narrow down the view by selecting a log type, the username (case-sensitive), or the affected page (also case-sensitive).

20:44, 2 December 2022 Grichards talk contribs created page Vegetative Cover (Created page with "__NOTOC__  Category:Overtopping Protection ----  "Vegetative cover maintained on the downstream faces of embankment dams provides some protection against normal weathering effects and rill development due to rainfall. During small overtopping flows of short duration, vegetation can also provide protection against the initiation of concentrated erosion that can...")
20:39, 2 December 2022 Grichards talk contribs created page Gabions (Created page with "  __NOTOC__  Category:Overtopping Protection ----  "Gabions are rectangular-shaped baskets or mattresses fabricated from wire mesh, filled with rock, and assembled to form structures such as gravity retaining walls, lined channels, overflow weirs, hydraulic drop...")
20:35, 2 December 2022 Grichards talk contribs created page Precast Concrete Blocks (Created page with "__NOTOC__ Category:Overtopping Protection ----  "Precast concrete blocks can be used over earth materials to provide a hard surface for flow to pass safely without eroding the underlying surface, and are commonly referred to as articulating concrete blocks (ACB) when used for this purpose. An ACB system is comprised of a matrix of individual concrete blocks placed together to form an erosion-resistant revetment wit...")
20:24, 2 December 2022 Grichards talk contribs deleted page Articulated Concrete Blocks (content was: " __NOTOC__ Category:Overtopping Protection ---- {{Picture  |image=  |link=  |caption= }}  Paragraph text ==Examples...", and the only contributor was "Grichards" (talk))
20:21, 2 December 2022 Grichards talk contribs created page Concrete Slab (Created page with "  __NOTOC__  Category:Overtopping Protection ----  "Overtopping protection for embankment dams utilizing conventional or mass concrete relies on a continuous layer of concrete to serve as the flow surface for overtopping flows. This normally consists of a smooth...")
19:24, 2 December 2022 Grichards talk contribs created page Plunge Pools (Created page with "__NOTOC__ Category:Energy Dissipation ---- Plunge pools are energy dissipating devices located below the outlet of a spillway. Energy is dissipated as the discharge falls into the plunge pool as a free-flowing jet. Plunge pools are commonly lined with rock riprap or other material to prevent excessive erosion of the pool area. Discharge from the plunge pool should be at the natural streambed elevation. Typical problems may include movement of the riprap, loss of fine...")
19:23, 2 December 2022 Grichards talk contribs created page Baffled Chutes (Created page with "__NOTOC__ Category:Energy Dissipation ---- Baffled chutes require no initial tailwater to operate effectively and are located downstream of the control section. Multiple rows of baffle piers on the chute prevent excessive acceleration of the flow and prevent the damage that occurs from a high discharge velocity. A portion of the baffled chute usually extends below the streambed elevation to prevent undermining of the chute. <ref name="ASDSO">[https://damsafety.org/da...")
19:22, 2 December 2022 Grichards talk contribs created page Stilling Basins (Created page with "__NOTOC__ Category:Energy Dissipation ---- Type II and Type III stilling basins reduce the energy of the flow discharging from a spillway and allow the water to enter the outlet channel at a reduced velocity. Type II basins contain chute blocks at the upstream end and a dentated (tooth-like) endsill. Baffle piers are not used in a Type II basin because of the high velocity water entering the basin. Type III energy dissipators can be used if the entering flow velocit...")
19:22, 2 December 2022 Grichards talk contribs created page Impact Basins (Created page with "__NOTOC__ Category:Energy Dissipation ---- Concrete impact basins are energy dissipating devices located at the outlet of the spillway in which flow from the discharge conduit strikes a vertical hanging baffle. Energy dissipation occurs as the discharge strikes the baffle; thus, performance is not dependent on tailwater elevation. Most impact basins were designed by the NRCS and the USBR. <ref name="ASDSO">[https://damsafety.org/dam-owners/outlet-erosion-control-stru...")
19:21, 2 December 2022 Grichards talk contribs created page Headwalls/endwalls (Created page with "__NOTOC__ Category:Energy Dissipation ---- Headwalls/endwalls located at or close to the end of the discharge conduit provide support and reduce the potential for undermining. Headwalls/endwalls are typically made of concrete and should be founded on bedrock or have an adequate foundation footing to provide support for stability. A headwall/endwall can experience undermining and become displaced if not adequately designed. Displacement of the headwall/endwall can...")
19:03, 2 December 2022 Grichards talk contribs deleted page Spillway Conveyance (content was: "__NOTOC__ Category:Spillways ----  “Conveyance features located immediately upstream and downstream of a control structure include approach channels, inlet structures, chutes, conduits, and/or tunnels. These conveyance features pass flow from the reservoir to the control structure, as well as pass flow from the control structure to the terminal structure. The conveyance f...")
18:49, 2 December 2022 Grichards talk contribs deleted page Control Section (content was: "__NOTOC__ Category:Spillways ----  “A major component of a spillway is the control device, which regulates the outflows from the reservoir. A control device limits or prevents outflows below fixed reservoir levels and regulates releases when the reservoir rises above that level. A control structure may consist of a sill, weir, orifice, or pipe. The discharge-head relationship...")
17:46, 2 December 2022 Grichards talk contribs deleted page Spillway Approach (content was: "__NOTOC__ Category:Spillways ----  “Spillway approach configurations will influence the abutment contraction coefficient, the nappe profile, and possibly the flow characteristics throughout the spillway chute and stilling basin. There are three general configurations for the spillway approach, each of which requires a different treatment at the abutments in order to provide a...")
03:10, 2 December 2022 Grichards talk contribs deleted page Siphon (content was: "Category:Outlet Configuration Outlet Works Many older dams were not constructed with a means of draining the reservoir. Lowering the reservoir may be needed for temporary construction, for emergency response, or when regular releases aren't needed. Siphons can be a low-cost means of providing a reservoir outlet if one does not exist. The key operational parameters are: (1) the required hydraulic lift cannot exceed the effective local atmospheric pressure adjusted fo...")
22:46, 28 November 2022 Grichards talk contribs moved page Timber Crib Dams to Timber Dams without leaving a redirect
22:17, 28 November 2022 Grichards talk contribs created page File:1.jpg
22:17, 28 November 2022 Grichards talk contribs uploaded File:1.jpg
23:14, 23 November 2022 Grichards talk contribs moved page Operations & Maintenance to Operation & Maintenance without leaving a redirect
23:01, 23 November 2022 Grichards talk contribs created page File:Westdam.jpg
23:01, 23 November 2022 Grichards talk contribs uploaded File:Westdam.jpg
22:54, 23 November 2022 Grichards talk contribs moved page About to About This Site without leaving a redirect
22:34, 23 November 2022 Grichards talk contribs deleted page References (content was: "#REDIRECT Best Practices Resources", and the only contributor was "Camrenbt" (talk))
22:19, 23 November 2022 Grichards talk contribs moved page Natural Resource Conservation Service to Natural Resources Conservation Service without leaving a redirect
05:51, 18 November 2022 Grichards talk contribs deleted page Seismic Considerations (content was: "#REDIRECT Seismic", and the only contributor was "Camrenbt" (talk))
04:33, 18 November 2022 Grichards talk contribs deleted page Operations and Maintenance (content was: "#REDIRECT Operations & Maintenance", and the only contributor was "Rmanwaring" (talk))
22:27, 28 September 2022 Grichards talk contribs deleted page Federal Guidelines for Inundation Mapping of Flood Risks Associated with Dam Failures (FEMA P-946) (content was: "#REDIRECT Federal Guidelines for Inundation Mapping of Flood Risks Associated with Dam Incidents and Failures (FEMA P-946)", and the only contributor was "Camrenbt" (talk))
22:27, 28 September 2022 Grichards talk contribs deleted page FEMA P-946 (content was: "#REDIRECT Federal Guidelines for Inundation Mapping of Flood Risks Associated with Dam Failures (FEMA P-946)", and the only contributor was "Camrenbt" (talk))
17:21, 28 September 2022 Grichards talk contribs moved page State & Federal Regulation to State & Federal Agencies without leaving a redirect
16:34, 17 September 2022 Grichards talk contribs created page Contamination / Environmental Pollutants (Created page with " __NOTOC__ ----  Paragraph text ==Best Practices Resources== {{Document Icon}} Dam Removal Analysis Guidelines for Sediment (Bureau of Reclamation) <!-- In the location of an in text citation, simply enclose the citation as follows: <ref> citation </ref>. Citations will au...")
16:31, 17 September 2022 Grichards talk contribs created page Baseline Natural & Cultural Resources (Created page with "__NOTOC__ ----  ==Typical Permitting Activities== * Limit of Disturbance * Wetland Delineation * Identification of Waterways * Identification of Protected Species <!-- For information on notation for in text citations visit https://www.mediawiki.org/wiki/Help:Cite Or simply enclose the citation as shown <ref> citation </ref> in the location of the in text m...")
16:28, 17 September 2022 Grichards talk contribs created page Record Keeping (Created page with "__NOTOC__ ---- ==Types of Record Keeping== *Photographic Records *Foundation Mapping ==Examples== {{Website Icon}} [https://damfailures.org/lessons-learned/a-complete-and-thorough-dam-record-is-essential/ Learn more about the importance of keeping a dam record (DamFailures.org)] <!-- For information on notation for in text citations visit https://www.mediawiki.org/wiki/Help:Cite Or simply enclose the citation as shown <ref> citation </ref> in the location of...")
16:26, 17 September 2022 Grichards talk contribs created page Quality Assurance/Quality Control (Created page with " __NOTOC__ ----  Paragraph text ==Best Practices Resources== {{Document Icon}} Engineering Guidelines for the Evaluation of Hydropower Projects: Chapter 7- Construction Quality Control Inspection Program|Engineering Guidelines for the Evaluation of Hydropower Projects: Chapter 7- Construction Quality Control Inspection...")
16:24, 17 September 2022 Grichards talk contribs created page Engineering Oversight (Created page with " __NOTOC__ ----  Paragraph text ==Engineering Oversight Responsibilities== * Site Inspection * Shop Inspection * Quality Assurance/Quality Control ==Trainings== {{Video Icon}} On-Demand Webinar: Fundamentals of Concrete Construction Inspections for Dams and Appurtenant Structures {{Video Icon}} On-Deman...")
16:21, 17 September 2022 Grichards talk contribs created page Dewatering (Created page with " __NOTOC__ ----  Paragraph text ==Best Practices Resources== {{Document Icon}} Design Standards No. 13: Embankment Dams (Ch. 21: Water Removal and Control: Dewatering and Unwatering Systems)|Design Standards No. 13: Embankment Dams (Ch. 21: Water Removal and Control: Dewatering and Unwatering Systems) (Bureau of Reclama...")
16:21, 17 September 2022 Grichards talk contribs created page Care and Diversion of Water (Created page with " __NOTOC__ ----  Paragraph text ==Best Practices Resources== {{Document Icon}} Design Standards No. 14: Appurtenant Structures for Dams (Ch. 2: Hydrologic Considerations) (Bureau of Reclamation) {{Document Icon}} Design of Sm...")
16:19, 17 September 2022 Grichards talk contribs created page First Filling (Created page with " __NOTOC__ ----  Paragraph text ==Examples== {{Website Icon}} [https://damfailures.org/lessons-learned/the-first-filling-of-a-reservoir-should-be-planned-controlled-and-monitored/ Learn more about the need to plan and monitor the first filling of a reservoir (DamFailures.org)] <!-- In the location of an in text citation,...")
16:17, 17 September 2022 Grichards talk contribs created page File:Const1.jpg
16:17, 17 September 2022 Grichards talk contribs uploaded File:Const1.jpg
16:14, 17 September 2022 Grichards talk contribs created page File:Pikes2.jpg
16:14, 17 September 2022 Grichards talk contribs uploaded File:Pikes2.jpg
16:13, 17 September 2022 Grichards talk contribs created page File:Pikes.jpg
16:13, 17 September 2022 Grichards talk contribs uploaded File:Pikes.jpg
16:10, 17 September 2022 Grichards talk contribs created page Seismic Source Characterization (Created page with " __NOTOC__ ----  Paragraph text * Background Seismicity * Areal Sources * Fault Sources  {{Citations}}...")
16:10, 17 September 2022 Grichards talk contribs created page Geologic and Tectonic Setting (Created page with " __NOTOC__ ----  Paragraph text * Local Geologic Setting * Local Tectonic Setting * Velocity Structure ...")
16:03, 17 September 2022 Grichards talk contribs created page File:LowerSan4.jpg
16:03, 17 September 2022 Grichards talk contribs uploaded File:LowerSan4.jpg
15:55, 17 September 2022 Grichards talk contribs created page Anchorage (Created page with " __NOTOC__ ----  Paragraph text ==Trainings== {{Video Icon}} On-Demand Webinar: Intro to Post-Tensioned Anchors for Dams <!-- In the location of an in text citation, simply enclose the citation as follows: <ref> citation </ref>. Citations will automatically populate. Learn more at https://www.mediawiki.org/wiki/Help:...")
15:54, 17 September 2022 Grichards talk contribs created page Water Tightness (Created page with " __NOTOC__ ----  Paragraph text ==Best Practices Resources== {{Document Icon}} Waterstops and Other Performed Joint Materials for Civil Works Structures (EM 1110-2-2102) (U.S. Army Corps of Engineers) ==Trainings== {{Video Icon...")
15:53, 17 September 2022 Grichards talk contribs created page Roller Compacted Concrete (Created page with " __NOTOC__ ----  Paragraph text ==Best Practices Resources== {{Document Icon}} Roller-Compacted Concrete (EM 1110-2-2006) (U.S. Army Corps of Engineers) {{Document Icon}} Applications of Roller-Compacted Concrete in Rehabilitation and Replacement of Hydraulic Structures (TR...")
15:51, 17 September 2022 Grichards talk contribs created page Mass Concrete (Created page with " __NOTOC__ ----  Paragraph text ==Best Practices Resources== {{Document Icon}} Standard Practice for Concrete for Civil Works Structures (EM 1110-2-2000) (U.S. Army Corps of Engineers) <!-- In the location of an in text citation, simply enclo...")