Download or read book National Dam Safety Program Butterfly Lake Dam MO 30501 and Rainbow Lake Dam MO 30641 Mississippi Kaskaskia St Louis Basin Ste Genevieve County Missouri Phase I Inspection Report written by Arthur L. Johnson and published by . This book was released on 1978 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inspection and evaluation indicate that the outlet facilities of Butterfly and Rainbow Lakes do not meet the criteria set forth in the guidelines for dams having the above size and hazard potential. Butterfly Dam is an intermediate size dam with a high hazard potential required by the guidelines to pass the PMF. It was determined that the outlet facilities will pass 20 percent of the PMF without overtopping the dam. Rainbow Dam is a small size dam with a high hazard potential required by the guidelines to pass from one-half PMF to the PMF. However, considering the high hazard potential to life (four families) and property downstream of the dam, the outlet facilities should be able to pass the PMF without overtopping the dam. It was determined that the outlet facilities will pass 15 percent of the PMF without overtopping the dam. The outlet facilities of Butterfly Dam will pass the 100-year flood without overtopping the dam. Rainbow Dam outlet facilities will not pass the 100-year flood. The 100-year flood is defined as a flood that has a 1 percent chance of being equalled or exceeded during any given year. Since the outlet facilities for the Butterfly Lake and Rainbow Lake Dams are not capable of passing a minimum of one-half (50 percent) of the PMF without overtopping the dam and causing failure, the outlet facilities are considered seriously inadequate and the dams are accordingly classified unsafe, non-emergency structures.
Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1981 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Dam Safety Program Govro Lake Dam MO 31095 Mississippi Kaskaskia St Louis River Basin Ste Genevieve County Missouri Phase I Inspection Report written by Steven L. Brady and published by . This book was released on 1981 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: Govro Lake Dam was inspected by an interdisciplinary team of engineers. The purpose of this inspection was to make an assessment of the general condition of the dam with respect to safety, based upon available data and visual inspection, in order to determine if the dam poses hazards to human life or property. Our inspection and evaluation indicates that the spillway does not meet the criteria set forth in the guidelines for a dam having the above size and hazard potential. The spillway flow line is at a higher elevation than the low point of the embankment. The dam will store 90 percent of the Probable Maximum Flood without overtopping. The Probable Maximum Flood is defined as the flood discharge that may be expected from the most severe combination of critical meteorological and hydrologic conditions that are reasonably possible in the region. The guidelines require that a dam of intermediate size with a high downstream hazard potential pass 100 percent of the PMF.
Download or read book National Dam Safety Program Hidden Valley Lake Dam MO 31100 Mississippi Kaskaskia St Louis Basin Ste Genevieve County Missouri Phase I Inspection Report written by Harold B. Lockett and published by . This book was released on 1980 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report was prepared under the National Program of Inspection of Non-Federal Dams. This report assesses the general condition of the dam with respect to safety, based on available data and on visual inspection, to determine if the dam poses hazards to human life or property. (Author).
Download or read book River Aux Vases Basin Butterfly and Rainbow Lakes Ste Genevieve County Missouri Phase I Inspection Report National Dam Safety Program written by United States. Army. Corps of Engineers. St. Louis District and published by . This book was released on 1978 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book River Aux Vases Basin Lake Kal Tatri Ste Genevieve County Missouri Phase I Inspection Report National Dam Safety Program written by United States. Army. Corps of Engineers. St. Louis District and published by . This book was released on 1978 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Dam Safety Program Rainbow Lake Dam MO 30544 Upper Mississippi Kaskaskia St Louis Basin Franklin County Missouri Phase I Inspection Report written by Harold B. Lockett and published by . This book was released on 1980 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the visual inspection and the results of the hydrologic/hydraulic investigations, the present general condition of the dam is considered to be less than satisfactory. Deficiencies were noticed during the inspection and are considered to have an adverse effect on the overall safety and future operation of the dam. Seepage, as characterized by cattails, willow trees, soft ground, and standing water was observed in two areas adjacent to the toe of the downstream slope of the dam. Uncontrolled seepage could develop into a piping condition (progressive internal erosion) that can lead to failure of the dam. Erosion of the grass covered upstream face of the dam apparently by wave action and/or fluctuations of the lake surface level has created a near vertical bank approximately 12-to-18 inches high. A grass covered slope is not considered adequate protection to prevent erosion of the embankment by wave action or fluctuations of the lake level. Loss of material by erosion can be detrimental to the dam's stability. At the time of the inspection, the grass and other turf cover on the dam slopes was about 3 feet high. Some areas of the dam were also covered with undergrowth including small tress and dense brush. The vegetative cover should not be allowed to reach a height that provides cover for burrowing animals or hinders inspection of the dam.
Download or read book National Dam Safety Program Little Bear Lake Dam MO 30533 Mississippi Kaskaskia St Louis Basin Cape Girardeau County Missouri Phase I Inspection Report written by Rey S. Decker and published by . This book was released on 1980 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the inspection was to make an assessment of the general conditions of the dam with respect to safety, based upon available data and visual inspection, in order to determine if the dam poses hazards to human life or property. The inspection and evaluation indicates that the spillways do not meet the criteria set forth in the 'Recommended Guidelines for Safety Inspection of Dams' for a small dam having a high hazard potential. Considering the small volume of water impounded, 50% of the Probable Maximum Flood is the appropriate design flood. The spillways will pass the 100-year flood (1% probability flood - a flood having a 1% chance of being exceeded in any one year) without overtopping the dam. The spillways will also pass 30% of the Probable Maximum Flood without overtopping the dam. The Probable Maximum Flood is defined as the flood that may be expected from the most severe combination of critical meteorologic and hydrologic conditions that are possible in the region.
Download or read book National Dam Safety Program Glen Basler Lake Dam MO 31382 Mississippi Kaskaskia St Louis River Basin Ste Genevieve County Missouri Phase I Inspection Report written by Steven L. Brady and published by . This book was released on 1981 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Glen Basler Lake Dam was inspected by an interdisciplinary team of engineers. The purpose of this inspection was to make an assessment of the general condition of the dam with respect to safety, based upon available data and visual inspection, in order to determine if the dam poses hazards to human life or property. Our inspection and evaluation indicates that the combined spillways do not meet the criteria set forth in the guidelines for a dam having the above size and hazard potential. The combined spillways will pass 11 percent of the Probable Maximum Flood without overtopping. The Probable Maximum Flood is defined as the flood discharge that may be expected from the most severe combination of critical meteorological and hydrologic conditions that are reasonably possible in the region.
Download or read book National Dam Safety Program Lake Kal Tatri Dam MO 31039 Mississippi Kaskaskia St Louis Basin Ste Genevieve County Missouri Phase I Inspection Report written by ARMY ENGINEER DISTRICT ST LOUIS MO. and published by . This book was released on 1978 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report was prepared under the National Program of Inspection of Non-Federal Dams. This report assesses the general condition of the dam with respect to safety, based on available data and on visual inspection, to determine if the dam poses hazards to human life or property. (Author).
Download or read book National Dam Safety Program PJ s Bass Lake Dam MO 31189 Mississippi Kaskaskia St Louis Basin St Francois County Missouri Phase I Inspection Report written by Richard G. Berggreen and published by . This book was released on 1981 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dam has been classified as unsafe, non-emergency by the St. Louis District as a result of the application of the following criteria: (a) Spillway will not pass 50 percent of the Probable Maximum Flood without overtopping the dam; (b) Overtopping of the dam could result in failure of the dam; and (c) Dam failure significantly increases the hazard to loss of life downstream.
Download or read book National Dam Safety Program Spring Lake Dam MO 31180 Mississippi Kaskaskia St Louis River Basin Cape Girardeau County Missouri Phase I Inspection Report written by Nathan Wilcoxon and published by . This book was released on 1981 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spring Lake Dam is an earthfill structure approximately 21 feet high and 400 feet long at the crest. The appurtenant works consist of a drop-inlet pipe principal spillway and a trapezoidal channel cut into natural ground at the left abutment which acts as an emergency spillway. Our inspection and evaluation indicates that the spillway has not met the criteria set forth in the guidelines for a small size dam in the high hazard potential category. This structure has the capability to hold and pass approximately 40 percent of the Probable Maximum Flood (PMF) before overtopping. The dam appeared to be in fair condition. Deficiencies visually observed by the inspection team were: (1) a row of trees (approximately 8) along the upstream face of the dam; (2) a significant potential for restriction to flow into the principal spillway intake; (3) some minor erosion on the downstream face of the dam; (4) the emergency spillway channel is partially obstructed by six steel drums and a fence; and (5) minor seepage into the principal spillway conduit from within the embankment.
Download or read book National Dam Safety Program Gudaitis Lake Dam MO 30702 Mississippi Kaskaskia St Louis Basin Washington County Missouri Phase I Inspection Report written by Richard G. Berggreen and published by . This book was released on 1980 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gudaitis Lake Dam is in the small size classification based on its maximum height of 25 ft and on its reservoir storage volume of about 180 ac-ft. The small dam classification includes dams between 25 and 40 ft in height or having storage capacities between 50 and 1000 ac-ft. The inspection and evaluation indicate the dam is in fair condition. This evaluation is primarily based on hydrologic analyses that indicate that a flood greater than 12 percent of the PMF will effectively overtop the dam. The dam will also be effectively overtopped by the one percent probability-of-occurrence (100 year) flood event. A 40 ft wide zone of slow seepage was noted at the toe of the dam, but the seepage water was not transporting any soil particles at the time of our inspection. The downstream face of the dam is heavily vegetated with relatively young trees up to 12 in. in diameter. This vegetation obscured portions of the dam from inspection. The spillway discharge channel is narrow and shallow and is bordered by many large trees. Deep gulley erosion is occurring where this channel traverses steeper slopes. Flood flows in this channel could cause overtopping of the channel and erosion of the channel walls, resulting in possible erosion at the toe of the dam.
Download or read book National Dam Safety Program Mach Lake Dam MO 30133 Mississippi Kaskaskia St Louis River Basin Perry County Missouri Phase I Inspection Report written by Steven L. Brady and published by . This book was released on 1981 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this inspection was to make an assessment of the general condition of the dam with respect to safety, based upon available data and visual inspection, in order to determine if the dam poses hazards to human life or property. The inspection and evaluation indicates that the combined spillways do not meet the criteria set forth in the guidelines for a dam having the above size and hazard potential. The combined spillways will pass 14 percent of the Probable Maximum Flood without overtopping. The Probable Maximum Flood is defined as the flood discharge that may be expected from the most severe combination of critical meteorologic and hydrologic conditions that are reasonably possible in the region. The guidelines require that a dam of small size with a high downstream hazard potential pass 50 to 100 percent of the PMF. Considering the low height of dam (33 feet) and the small storage capacity (103 acre-ft), fifty percent of the PMF has been determined to be the appropriate spillway design flood. The 100-year flood (1 percent probability flood) will not overtop the dam. The 1 percent probability flood is one that has a 1 percent chance of being exceeded in any given year.
Download or read book National Dam Safety Program B K Lake Number 1 Dam MO 30506 Mississippi Kaskaskia St Louis Basin Warren County Missouri Phase I Inspection Report written by Walter G. Shifrin and published by . This book was released on 1979 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the criteria in the guidelines, the dam is in the high hazard potential classification, which means that loss of life and appreciable property loss could occur in the event of failure of the dam. Within the estimated five mile damage zone downstream of the dam are seven houses, six buildings, and one road crossing which may be subjected to flooding, with possible damage and/or destruction, and possible loss of life. B & K Lake No. 1 Dam is in the small size classification since it is less than 40 feet high and impounds less than 1,000 acre-feet of water. B & K Lake No. 1 Dam being a small size dam with a high hazard potential, is required by the guidelines to pass from one-half of the Probable Maximum Flood to the Probable Maximum Flood without overtopping. Since there is high hazard potential downstream of the dam, the appropriate spillway design flood for this dam is the Probable Maximum Flood. It was determined that the reservoir/spillway system can accommodate 17 percent of the Probable Maximum Flood without overtopping the dam. Our evaluation also indicates that the reservoir/spillway system can accommodate the 100-year flood without overtopping the dam.
Download or read book National Dam Safety Program Sherman Lake Dam MO 30839 Mississippi Kaskaskia St Louis Basin Bollinger County Missouri Phase I Inspection Report written by ARMY ENGINEER DISTRICT ST LOUIS MO. and published by . This book was released on 1979 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field and visual inspections presented herein are considered adequate to support the conclusions of this report. Seepage and stability analyses comparable to the requirements of the 'Recommended Guidelines for Safety Inspection of Dams' were not available which is considered a deficiency. These seepage and stability analyses should be performed for appropriate loading conditions (including earthquake loads) and made a matter of record.
Download or read book National Dam Safety Program White Smith Austin Lake Dam MO 30584 Mississippi Kaskaskia St Louis Basin Warren County Missouri Phase I Inspection Report written by Walter G. Shifrin and published by . This book was released on 1979 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: White, Smith, Austin Lake Dam is located in Warren County, Missouri at the headwaters of Schlanker Branch. The purpose of the dam is to impound water for recreational use as a private lake. The lake is utilized by landowners adjacent to the lake. The crest of the embankment has a thick grass cover. Trees and large brush currently densely vegetate the downstream slope of the embankment. One small area on the downstream embankment slope near the center of the dam has recently been cleared of trees and brush. The upstream slope has brush and small trees growing on the right side of the embankment, while the vegetation on the left side has recently been cut.
