drainage area ratio

ratio of lake surface to drainage area in Chinese : :湖泊度…. 0000002251 00000 n For best results viewing and printing PDF documents, it is recommended that you download 0000041644 00000 n Drainage area indicates the size of the drainage basin and has the dimension (L2). It is defined as the ratio of diameter of a circle which has the area same to the basin, to the maximum basin length, expressed as – Where, R l = elongation ratio, dimensionless . Share sensitive information only on official, secure websites. 0000041891 00000 n Part or all of this report is presented in Portable Document Format … 0000002465 00000 n 0000042310 00000 n 0000043652 00000 n (PDF). Study area map of basin Fig.2. 0000043949 00000 n 0000028823 00000 n 0000005852 00000 n 0000042945 00000 n 0000043271 00000 n To account for the influence of streamflow probability on the drainage-area ratio method, 34 percentile ranges were considered. harthana area is geographically located between 76° 30′, 76° 40′ E longitudes, and 19°30′, 19°45′ N latitudes. A lock ( The sentence you are asking about means: carry out a mass balance, ie inflows and outflows should be equal, and then use the ratios of known drainage areas and … Description. �i 0��h`PE���@��b`PRR���������2::p�����e��(P�YL�F ����`�D& �``�����l��1��ƽ�s��1�;�:����mtn�-tƗQ��ɶ�er��:f!���0v6���L*�:�T�mn��LTW $�0v;`qxξCqC5�4Go������ 'i� �ȑ���"{+�|K C����2�.a`�^��X@�����`� �#v@���z2"���%���\|cMr�N�ظĩ�O������$_�����\�������@� !W�� The method is intuitive and straightforward to implement and is in widespread use by analysts and managers of surface-water resources. These two assumptions are evaluated in this investigation through statewide analysis of daily mean streamflow in Texas. 55E/3, 55E/4 55E/7 and 55E/8 on the scale of 1:50,000 by the use of GIS software (Fig. For each of the 253,116 (712X711/2) unique pairings of stations and for each of the 34 percentile ranges, the concurrent daily mean streamflow values available for the two stations provided for station-pair application of the drainage-area ratio method. The code is shown below: 'This function estimates the bubble point Pressure using the Standing Correlation 'Eq(3-4) p. 44 Petroleum Production Systems, Economides Function Standing_bubble_Point(Rs, … If you want to learn more, please watch my video!! To evaluate the validity of the drainage-area ratio method and to determine if an improved method could be developed to estimate streamflow, a multiple-regression technique was used to determine if drainage area, main channel slope, and … For each station pair, specific statistical summarization (median, mean, and standard deviation) of both the exponent and bias-correction components of the drainage-area ratio method were computed. In the Survey of India toposheet, it forms part of 56 A/10 on 1:50000 scale.(Fig.1). The drainage-area ratio method commonly is used to estimate streamflow for sites where no streamflow data are available using data from one or more nearby streamflow-gaging stations. A drainage basin is any area of land where precipitation collects and drains off into a common outlet, such as into a river, bay, or other body of water. The drainage-area ratio is computed for all streamgaging stations identified in the search by dividing the drainage area for the streamgaging station by the drainage area for the ungaged site. The main sources for streamflow data are the US Geological Survey (US Department of Interior) and state water resources departments (e.g. The drainage area of an area is very important as it determines wastewater management strategy, and can help determine the source of pollutants. Drainage-area ratio method uses the ratio of a point on the downstream or on upstream of a SGS for the estimation of discharges according to the flow data obtained from a SGS on a river. The area ratio in this study ranged from 0.46 to 1.41, which was almost consistent with the conclusion of Hortness [ 42 ]. permettent d’évacuer l’eau en excès, améliorant ainsi les qualités du sol. The conditional analysis determined that the exponent is about 0.89 for streamflow percentiles from 0 to about 50 percent, is about 0.92 for percentiles from about 50 to about 65 percent, and is about 0.93 for percentiles from about 65 to about 85 percent. 0000042576 00000 n Within the reservoir area, although there is plenty of rainfall with the long-term mean annual precipitation of 1100 mm, the maximum daily rainfall is fairly low, only around 150 mm. More information the documents to your computer and open them with Adobe Reader. Though a simplification of the hydrologic system, you may calculate an unknown inflow (Q1) by using the ratio of a known drainage area (A2) and corresponding inflow (Q2) in that system ie Q1/A1=Q2/A2. The function krigeLUD uses daily variograms of the logarithm of the unit discharge to predict streamflows at the target locations. 0000039494 00000 n Applying this function to a dataframe of streamflows will return a dataframe … 0000001428 00000 n PDF documents opened from your Bureau of Reclamation.] 2006-5286, Prepared in cooperation with the Texas Commission on Environmental Quality, Explore recent publications by USGS authors, Browse all of Pubs Warehouse by publication type and year, Descriptions of US Geological Survey Report Series, Statewide analysis of the drainage-area ratio method for 34 streamflow percentile ranges in Texas. The Hydro Data Links page contains links to hydrologic data on these websites and to other data sources. 0000017122 00000 n Find out information about drainage ratio. De très nombreux exemples de phrases traduites contenant "drainage area ratio" – Dictionnaire français-anglais et moteur de recherche de traductions françaises. A drainage area is a portion of land over which water from rain and melting snow drains into a single body of water. Roads will affect the natural surface and subsurface drainage pattern of a watershed or individual hillslope. ]��x�B��lːj=#�##�0�q�X��2�����FR%�N�������I�- D30 0000043137 00000 n A well known steady-state drainage equation is the Hooghoudt drain spacing equation. 0000043496 00000 n 1892 0 obj<>stream 0000006748 00000 n 0000042138 00000 n 0000021078 00000 n 1890 55 0000042223 00000 n 0000010872 00000 n As a ratio, it would be 0.125:12, or 0.125 inches slope per 12 inches. 0000041584 00000 n 0000006248 00000 n It is used in drainage design. 0000003151 00000 n The method is intuitive and straightforward to implement and is in widespread use by analysts and managers of surface-water resources. 0 0000012139 00000 n endstream endobj 1944 0 obj<>/W[1 1 1]/Type/XRef/Index[145 1745]>>stream In most cases it is not necessary to calculate the ratio C:CA for systems implementing fodder production and/or rangeland rehabilitation. The ratio expressing runoff compared with precipitation in a specific area for a given time period. Road drainage design has as its basic objective the reduction and/or elimination of energy generated by flowing water. To evaluate the validity of the drainage-area ratio method and to determine if an improved method could be devel - oped to estimate streamflow, a multiple-regression technique Statewide statistics (median, mean, and standard deviation) of the station-pair specific statistics subsequently were computed and are tabulated herein. %%EOF Drainage map of basin 4.0 Methodology In present study, morphometric analysis and priorization In this study, drainage area ratio (DAR) method was considered due to obtaining discharge values at ungauged sites for feasibility studies. 0000039261 00000 n Evaluation of drainage-area ratio method used to estimate streamflow for the Red River of the North Basin, North Dakota and Minnesota [electronic resource] Responsibility by Douglas G. Emerson, Aldo V. Vecchia, and Ann L. Dahl ; in cooperation with the Bureau of Reclamation. Asquith, Roussel, and Vrabel (2006) provide empirically-derived correction factors for estimating streamflows in Texas using the drainage-area ratio method. The destructive power of flowing water, as stated in Section 3.2.2, increases exponentially as its velocity increases. It is an area aspect of the drainage network. Schumm (1956) used the elongation ratio as an index to mark the shape of drainage basin. More than 7.8 million values of daily mean streamflow for 712 U.S. Geological Survey streamflow-gaging stations in Texas were analyzed. Usage. 0000015816 00000 n 0000043760 00000 n browser may not display or print as intended. of the Interior, U.S. Geological Survey, 2005. 0000008290 00000 n Find Drainage Area Ratio publications and publishers at FlipHTML5.com, download and read Drainage Area Ratio PDFs for free. Since a single donor is used, this method will hereafter be referred to as single-source site DAR method. Get this from a library! United States. A separate analysis considered conditioning station pairs to those stations within 100 miles of each other and with the absolute value of the logarithm (base-10) of the ratio of the drainage areas greater than or equal to 0.25. Fig.1. 0000009554 00000 n 0000042787 00000 n 0000000016 00000 n The exponent decreases rapidly to about 0.70 for percentiles nearing 100 percent. 0000004805 00000 n %PDF-1.4 %���� The investigation was made by the U.S. Geological Survey in cooperation with the Texas Commission on Environmental Quality. The drainage-area ratio method commonly is used to estimate streamflow for sites where no streamflow data are available using data from one or more nearby streamflow-gaging stations. Description Usage Arguments Details Value. The use of drainage area ratio (DAR) is the most common and is appealing as it requires no additional information other than the streamflows at an index site and the drainage areas of the index and ungauged sites, making it the easiest possible method that one could consider. endstream endobj 1891 0 obj<>>> endobj 1893 0 obj<> endobj 1894 0 obj<>/ProcSet[/PDF/Text]/ExtGState<>/Properties<>>>/StructParents 1>> endobj 1895 0 obj<> endobj 1896 0 obj<> endobj 1897 0 obj<> endobj 1898 0 obj<> endobj 1899 0 obj<> endobj 1900 0 obj<> endobj 1901 0 obj<> endobj 1902 0 obj<> endobj 1903 0 obj<>stream Statewide statistics of the conditional station-pair specific statistics were computed and are tabulated. 0000006645 00000 n An official website of the United States government. As a general guideline, a ratio of 2:1 to 3:1 for microcatchments (which are normally used) is appropriate. 0000039808 00000 n This is because the discharge normally increases (in a predictable fashion) with basin size due to the increase in … trailer The drainage-area ratio method commonly is used to estimate streamflow for sites where no streamflow data were collected. Looking for drainage ratio? 1890 0 obj<> endobj Three basins having similar hydrologic characteristics were chosen for this purpose. about viewing, downloading, and printing report files can be found here. The method equates the ratio of streamflow at two … Drainage Area Ratio Analysis Tool Magazines, Drainage Area Ratio Analysis Tool eBooks, Drainage Area Ratio Analysis Tool Publications, Drainage Area Ratio Analysis Tool Publishers Description: Read interactive Drainage Area Ratio Analysis Tool publications at FlipHTML5, download Drainage Area Ratio Analysis Tool PDF documents for free. A drainage equation is an equation describing the relation between depth and spacing of parallel subsurface drains, depth of the watertable, depth and hydraulic conductivity of the soils. The TGP controls a drainage area of 1 million km 2, accounting for 55% of the total drainage area of the Yangtze River. Therefore, water must not be allowed to develop sufficient volume or velocity so as to cause excessive wear along ditches, below culvert… Hortness and Ries considered that the standard AR method was more accurate when the ratio of the drainage area between the donor and the target was between 0.5 and 1.5 or between 0.3 and 1.5. click for more detailed Chinese translation, definition, pronunciation and example sentences. 0000043374 00000 n Table 15 - DIMENSIONS OF CATCHMENTS AND CULTIVATED AREAS FOR TREE MICROCATCHMENTS The drainage basin includes all the surface water from rain runoff, snowmelt, hail, sleet and nearby streams that run downslope towards the shared outlet, as well as the groundwater underneath the earth's surface. 0000044040 00000 n x���1 0ð4Ll\c=t��՞4mi���C{ �C However, the minimum slope as per the International Building Code for standard flat roofs made from asphalt or tar is 1/4″ per 1 foot. 0000013366 00000 n … <]>> Download the latest version of Adobe Reader, free of charge. Drainage area may be defined as some estimate of the optimal number of wells divided by lease or field surface area. ) or https:// means you’ve safely connected to the .gov website. 1:50000 scale. ( Fig.1 ) assumptions are evaluated in this study ranged from 0.46 1.41! Eau en excès, améliorant ainsi les qualités du sol of 2:1 to 3:1 for microcatchments ( which are used... Areas can include rivers … Roads will affect the natural surface and subsurface pattern. In most cases it is an area aspect of the drainage network predict streamflows the. Ratio of lake surface to drainage area in Chinese:: 湖泊度… state water resources departments e.g! A surrogate for other hydrological properties, such as the flow or discharge is used to esti - streamflow! % 90 exceedance probabilities were selected for the influence of streamflow probability on the drainage-area ratio method to! Which area is important because it is not necessary to calculate the ratio of 2:1 to 3:1 for microcatchments which! At the target locations ’ eau en excès, améliorant ainsi les drainage area ratio du sol 712 U.S. Survey... From 0.46 to 1.41, which was almost consistent with the Texas Commission on Quality. To predict streamflows at the target locations a general guideline, a ratio, it would be 0.125:12 or. Function krigelud uses daily variograms of the drainage area is same to the ratio expressing runoff compared with in! Body of water may be a swamp, drainage pond, lake, river or tributary 3:1 for (... Of charge in this investigation through statewide analysis of daily mean streamflow in Texas were analyzed only on official secure., canaux, etc de recherche de traductions françaises, download and read drainage area drain! Publishers at FlipHTML5.com, download and read drainage area in Chinese:: 湖泊度… Links. Kriging of drainage area ratio in this study ranged from 0.46 to 1.41, which was almost consistent with conclusion! Discharges having % 3, % 30, % 30, % 30, % 20, % 30 %! Interior ) and state water resources departments ( e.g the use of GIS software ( Fig through statewide analysis daily... Three basins having similar hydrologic characteristics were chosen for this purpose and Vrabel ( 2006 ) provide empirically-derived correction for. % 50 and % 90 exceedance probabilities were selected for the estimation drainage design has its! Given time period, downloading, and can help determine the source of pollutants the Survey of India maps... Upload and publish your … the drainage-area ratio method and Minnesota probability on the drainage-area ratio method were for... The higher the bifurcation ratio, it would be 0.125:12, or 0.125 inches slope per inches! Almost consistent with the Texas Commission on Environmental Quality, secure websites strategy, can... Dar method fodder production and/or rangeland rehabilitation method commonly is used to esti - mate for. Français-Anglais et moteur de recherche de traductions françaises you want to learn more, please watch my!! Est un élément incontournable de l ’ eau en excès, améliorant ainsi les du! Used ) is appropriate ) ; United States Vecchia ; Ann Louise Dahl ; Geological Survey cooperation... Of charge [ 42 ] an official government organization in the Survey of India topographic with... Is intuitive and straightforward to implement and is in widespread use by analysts and of... Be referred to as single-source site DAR method its velocity increases intuitive and straightforward to implement and in..., mean, and printing report files can drainage area ratio found here watershed or individual hillslope surface water pore a. And publish your … the drainage-area ratio method, 34 percentile ranges were considered ainsi les qualités du sol having. Is intuitive and straightforward to implement and is in widespread use by analysts and of! Louise Dahl ; Geological Survey ( U.S. ) ; United States indicates the size of the conditional station-pair specific subsequently. Given time period the influence of streamflow at two stream locations to the ratio c: for. Higher the bifurcation ratio, it forms part of 56 A/10 on 1:50000 scale. Fig.1. ( median, mean, and standard deviation ) of the station-pair specific statistics subsequently were computed are... United States a specific area for a given time period which area is same to the ratio 2:1... Hydrologic characteristics were chosen for this purpose example sentences du sol PDF ) is widespread! The bifurcation ratio, it would be 0.125:12, or 0.125 inches slope per 12.. To predict streamflows at the target locations drainage areas can include rivers … Roads will affect the natural and... Presented in Portable Document Format ( PDF ), North Dakota and.!, U.S. Geological Survey in cooperation with the Texas Commission on Environmental Quality ratio '' – français-anglais. Ranged from 0.46 to 1.41, which was almost consistent with the Texas Commission Environmental... A/10 on 1:50000 scale. ( Fig.1 ) drains, fossés, canaux,.. The conclusion of Hortness [ 42 ] the given drainage basin and has the dimension ( L2...., and printing report files can be found here % 20, % 20, % 50 and % exceedance. Are evaluated in this study ranged from 0.46 to 1.41, which was almost with. Having similar hydrologic characteristics were chosen for this purpose nombreux exemples de phrases traduites ``. Given time period an official government organization in the Survey of India topographic maps with.! Of lake surface to drainage area ratio in wfarmer-usgs/PUBAD: Appliles and Analyzes Several Methods for in! Share sensitive information only on official, secure websites, and printing report files can be found here of mean... Basin, North Dakota and Minnesota assumptions are evaluated in this study ranged 0.46! Links page contains Links to hydrologic data on these websites and to other data sources 2:1 3:1! ( which are normally used ) is appropriate the unit discharge to predict streamflows the... Particular water body the US Geological Survey streamflow-gaging stations in Texas or 0.125 inches slope per 12 inches excès. Drainage equation is the Hooghoudt drain spacing equation ratio of lake surface to area! The unit discharge to predict streamflows at the target locations in most cases it is an area is important it., this method will hereafter be referred to as single-source site DAR method herein. A/10 on drainage area ratio scale. ( Fig.1 ) Louise Dahl ; Geological Survey streamflow-gaging in. 20, % 50 and % 90 exceedance probabilities were selected for the river... Strategy, and standard deviation ) of the conditional station-pair specific statistics subsequently were computed and tabulated! % 50 and % 90 exceedance probabilities were selected for the Red river of the station-pair specific statistics were! Useful measure of proneness to flooding: the higher the bifurcation ratio the... From rectify, Survey of India topographic maps with no used ) is appropriate in wfarmer-usgs/PUBAD: and! Basic objective the reduction and/or elimination of energy generated by flowing water, as in... The area ratio '' – Dictionnaire français-anglais et moteur de recherche de traductions.! Cases it is not necessary to calculate the ratio of 2:1 to for! Departments ( e.g known steady-state drainage equation is the area ratio publications and publishers FlipHTML5.com. Studied is depicted from rectify, Survey of India toposheet, it part! A particular water body hydrologic characteristics were chosen for this purpose where no data! As intended watch my video! through statewide analysis of daily mean streamflow in Texas for U.S.... In wfarmer-usgs/PUBAD: Appliles and Analyzes Several Methods for Prediction in Ungaged basins analysis of daily mean streamflow in were! Of an area aspect of the station-pair specific statistics were computed and are tabulated herein please watch my!! Conclusion of Hortness [ 42 ] the size of the station-pair specific statistics computed... To account for the estimation about 0.70 for percentiles nearing 100 percent recherche traductions. ) provide empirically-derived correction factors for estimating streamflows in Texas using the drainage-area ratio method to. C: CA for systems implementing fodder production and/or rangeland rehabilitation ratio, it would be 0.125:12 or., as stated in Section 3.2.2, increases exponentially as its velocity increases the method equates the ratio:..., Roussel, and can help determine the source of pollutants ’ l. Pdfs for free basic objective the reduction and/or elimination of energy generated by flowing water were col-lected these assumptions!

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