Dear Arshad Ali,

Soil erosion is a serious problem arising from agricultural intensification, land degradation and other anthropogenic activities. Assessment of soil erosion is useful in planning and conservation works in a watershed or basin with an average of 8.2% . Modelling can provide a quantitative and consistent approach to estimate soil erosion and sediment yield under a wide range of conditions. In the present study, the soil loss model, Revised Universal Soil Loss Equation (RUSLE) integrated with GIS has been used to estimate soil loss. Soil erosion involves detachment and transport of soil parti-cles from top soil layers, degrading soil quality and reducingthe productivity of affected lands. Soil eroded from the up-land catchment causes depletion of fertile agricultural landand the resulting sediment deposited at the river networkscreates river morphological change and reservoir sedimenta-tion problems. However, land managers and policy makersare more interested in the spatial distribution of soil erosionrisk than in absolute values of soil erosion loss. The aims of this paper is to model the spatial distribution of soil erosionin Densu River Basin of Ghana using RUSLE and GIS toolsand to use the model to explore the relationship betweenerosion susceptibility, slope and Land use and Land Cover (LULC) in the Basin. The rainfall map, digital elevationmodel, soil type map, and land cover map, were input data inthe soil erosion model developed. This model was then cate-gorized into four different erosion risk classes. The devel-oped soil erosion map was then overlaid with the slope andLULC maps of the of the study area to explore their effectson erosion susceptibility of the soil in the Densu River Ba-sin. The Model, predicted 88% of the basin as low erosionrisk and 6% as moderate erosion risk3% as high erosion risk and 3% as severe risk. The high and severe erosion areaswere distributed mainly within the areas of high slope gradi-ent and also sections of the moderate forest LULC class.Also, the areas within the moderate forest LULC class foundto have high erosion risk had an intersecting high erodibilitysoil group.Soil erosion involves detachment and transport of soil parti-cles from top soil layers, degrading soil quality and reducingthe productivity of affected lands [1]. Problems associatedwith land soil erosion, movement and deposition of sedimentin rivers, lakes and estuaries persist through the geologicages around the world [2]. Erosion in basin areas createssuperficial crust of soil to be eradicated and the arable landsto be reduced [3]. Soil eroded from the upland catchmentcauses depletion of fertile agricultural land and the resultingsediment delivered to the river networks creates river mor- phological change and reservoir sedimentation problems.

Regards,

Prem Baboo

Dear Arshad Ali Shedayi:

I think the soil structure can not be omitted. In addition, It is a soil property whose determination is very fast in the field, consequently I recommend you their determination. However there are tables such as the original document of Wischmeier and Smith (attached) where you can find K values according to other variables.

Best regards

Dear Arshad Ali

I have not worked with RUSLE but with the old USLE. In the absent of the soil map, I set my K factor based on the geological material. Off course, this will only work if your whole area has the same geological material. Otherwise you will need a map for geological material to guide you.

With regard to the P factor and the use of GIS, you could do a supervised classification of Landsat image coupled with ground truthing to validate the features and the areas for support practices. Thus mapping  - creating a layer for P factor in GIS.

Best of luck

Rosemary

http://www.giser.be/wp-content/uploads/2012/05/USLE-infosCanada.pdf.

It is long discussion, so i giveaway you some reference for you https://www.researchgate.net/publication/305841586_Estimation_of_Soil_Erosion_Using_RUSLE_Model_and_GIS_Techniques_for_Conservation_Planning_from_Kulekhani_Reservoir_Catchment_Nepal

(PDF) Estimation of Soil Erosion Using RUSLE Model and GIS ...

http://www.weriguam.org/docs/reports/117.pdf

developing a gis-based soil erosion potential model of the ugum ...

https://www.geospatialworld.net/article/using-gis-rs-for-soil-erosion-mapping/

Using GIS, RS for soil erosion mapping - Geospatial World

https://www.geospatialworld.net/article/soil-erosion-mapping-with-universal-soil-loss-equation-and-gis/

Soil erosion mapping with universal soil loss equation and GIS ...

https://crisp.nus.edu.sg/~acrs2001/pdf/169wijes.PDF

extraction of parameters and modelling soil erosion using gis in a ...

https://lup.lub.lu.se/luur/download?func=downloadFile&recordOId=1709494&fileOId=1709495

Soil Loss Estimation Based on the USLE/GIS Approach Through ...

http://www.engr.colostate.edu/~pierre/ce_old/resume/Theses%20and%20Dissertations/Thesis%20Soo%20Huey%20Teh.pdf

soil erosion modeling using rusle and gis on cameron highlands ...

https://www.engr.colostate.edu/~pierre/ce_old/resume/Theses%20and%20Dissertations/KIMHYOENSIK-Thesis.pdf

THESIS SOIL EROSION MODELING USING RUSLE AND GIS ON ...

https://engineering.purdue.edu/ABE/people/Papers/bernard.a.engel.1/gis.pdf

GIS-based sediment assessment tool - Purdue Engineering

http://edepot.wur.nl/121376

Soil water erosion assessment and the landscape ... - WUR E-depot

https://www.tucson.ars.ag.gov/unit/publications/PDFfiles/775.pdf

Article Estimation of soil erosion using RUSLE and GIS techniques: A...

Article Assessment of soil erosion by RUSLE model using remote sensi...

https://www.hindawi.com/journals/ace/2019/7129639/

Dear all please send the full document of SOIL EROSION RISK AND SEDIMENT YIELD ASSESSMENT WITH USLE MODEL AND SWAT MODEL

Go through it- Article A Review of RUSLE Model

Article Mapping potential soil erosion using RUSLE, Remote Sensing, ...

You can have a look at our study :

Deleted research item The research item mentioned here has been deleted

This article reveals how land surface temperature influences RUSLE based soil erosion. Please have a look-

Chapter Identification of the relationship between temporally varyin...

Article Assessment of Water-Induced Soil Erosion as a Threat to Natu...