Difference between revisions of "Carmel River Watershed: Map of Subwatersheds and Gage Locations"
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* [[Media:subwatersheds.png|PNG file]] | * [[Media:subwatersheds.png|PNG file]] | ||
+ | == Subwatershed Data == | ||
+ | {| class="wikitable" | ||
+ | |- | ||
+ | ! Subwatershed | ||
+ | ! Area (mi2) | ||
+ | ! Precip. (inches) | ||
+ | ! Burn percentage** | ||
+ | |- | ||
+ | |Mouth | ||
+ | |1.77 | ||
+ | |17.50 | ||
+ | |0.00% | ||
+ | |- | ||
+ | |Hwy 1 | ||
+ | |6.07 | ||
+ | |19.05 | ||
+ | |0.23% | ||
+ | |- | ||
+ | |Via Mallorca | ||
+ | |33.39 | ||
+ | |19.93 | ||
+ | |0.01% | ||
+ | |- | ||
+ | |Sleepy Hollow | ||
+ | |0.91 | ||
+ | |21.92 | ||
+ | |0.00% | ||
+ | |- | ||
+ | |Don Juan | ||
+ | |20.63 | ||
+ | |28.00 | ||
+ | |0.86% | ||
+ | |- | ||
+ | |Robles del Rio | ||
+ | |66.34 | ||
+ | |23.25 | ||
+ | |0.84% | ||
+ | |- | ||
+ | |Pine Ck | ||
+ | |7.93 | ||
+ | |38.26 | ||
+ | |19.80% | ||
+ | |- | ||
+ | |San Clemente | ||
+ | |50.69 | ||
+ | |28.52 | ||
+ | |4.48% | ||
+ | |- | ||
+ | |Finch Ck. | ||
+ | |22.32 | ||
+ | |29.06 | ||
+ | |0.38% | ||
+ | |- | ||
+ | |Los Padres | ||
+ | |45.01 | ||
+ | |39.23 | ||
+ | |19.20% | ||
+ | |} | ||
+ | ''**Percentage of area burned to severity of dNBR 0.4 or more | ||
+ | '' | ||
== Metadata == | == Metadata == | ||
− | * Original source of data: | + | * Original source of data: The National Map [https://viewer.nationalmap.gov/basic/] |
* Map produced by: Nikki Inglis | * Map produced by: Nikki Inglis | ||
− | |||
− | |||
* Geographic Coordinate System: GCS_North_American_1983 | * Geographic Coordinate System: GCS_North_American_1983 | ||
**Datum: D_North_American_1983 | **Datum: D_North_American_1983 | ||
− | == Processing Steps == | + | == ArcGIS Processing Steps == |
− | # | + | |
− | # | + | # Clipped the digital elevation model (DEM) into a TIFF comprising the study area (Clip tool) |
− | # | + | # Eliminated ocean cells by selecting and extracting DEM values greater than 0 (Extract by attributes tool) |
+ | # Filled spurious sinks to account for small errors and imperfections in the DEM (Fill tool) Manually created a new line feature (levee) to correct a flow direction error. In our analysis, a tributary had failed to connect with the Carmel at its actual confluence above a flow gauge, instead connecting further downstream below the gauge site. (Create features) | ||
+ | # Merged the levee feature with the filled DEM .tif (Raster calculator tool)# Created a raster that determined flow direction based on each cell’s steepest downslope neighboring cell (Flow direction tool) | ||
+ | # Created a raster of accumulated flow in each cell based off the flow direction raster (Flow accumulation tool) | ||
+ | # Created stream vectors by calculating pixel count based on a 2 km, 10 km and 30 km area (Raster calculator) Snapped gauging sites to the implied streams (done manually) | ||
+ | # Determined watershed and subwatershed boundaries by calculating the contributing cells above each flow gauge using the flow direction raster (Watershed tool) | ||
+ | # Projected watershed boundaries to a Projected Coordinate System to calculate areas (Raster to polygon and Project tools, Calculate geometry in attribute table) | ||
== Links == | == Links == | ||
* [[Maps of the Carmel River Watershed]] | * [[Maps of the Carmel River Watershed]] |
Latest revision as of 19:59, 30 March 2017
Subwatershed Data
Subwatershed | Area (mi2) | Precip. (inches) | Burn percentage** |
---|---|---|---|
Mouth | 1.77 | 17.50 | 0.00% |
Hwy 1 | 6.07 | 19.05 | 0.23% |
Via Mallorca | 33.39 | 19.93 | 0.01% |
Sleepy Hollow | 0.91 | 21.92 | 0.00% |
Don Juan | 20.63 | 28.00 | 0.86% |
Robles del Rio | 66.34 | 23.25 | 0.84% |
Pine Ck | 7.93 | 38.26 | 19.80% |
San Clemente | 50.69 | 28.52 | 4.48% |
Finch Ck. | 22.32 | 29.06 | 0.38% |
Los Padres | 45.01 | 39.23 | 19.20% |
**Percentage of area burned to severity of dNBR 0.4 or more
Metadata
- Original source of data: The National Map [1]
- Map produced by: Nikki Inglis
- Geographic Coordinate System: GCS_North_American_1983
- Datum: D_North_American_1983
ArcGIS Processing Steps
- Clipped the digital elevation model (DEM) into a TIFF comprising the study area (Clip tool)
- Eliminated ocean cells by selecting and extracting DEM values greater than 0 (Extract by attributes tool)
- Filled spurious sinks to account for small errors and imperfections in the DEM (Fill tool) Manually created a new line feature (levee) to correct a flow direction error. In our analysis, a tributary had failed to connect with the Carmel at its actual confluence above a flow gauge, instead connecting further downstream below the gauge site. (Create features)
- Merged the levee feature with the filled DEM .tif (Raster calculator tool)# Created a raster that determined flow direction based on each cell’s steepest downslope neighboring cell (Flow direction tool)
- Created a raster of accumulated flow in each cell based off the flow direction raster (Flow accumulation tool)
- Created stream vectors by calculating pixel count based on a 2 km, 10 km and 30 km area (Raster calculator) Snapped gauging sites to the implied streams (done manually)
- Determined watershed and subwatershed boundaries by calculating the contributing cells above each flow gauge using the flow direction raster (Watershed tool)
- Projected watershed boundaries to a Projected Coordinate System to calculate areas (Raster to polygon and Project tools, Calculate geometry in attribute table)