HUC12 Priority Watersheds (View 1)

This layer shows a multi-component analysis for California stream gage priorities at the Hydrologic Unit Code 12 (HUC12) watershed resolution. The Stream Gage Prioritization Analysis is part of the Senate Bill 19 Stream Gaging Plan, which seeks to prioritize areas for additional stream gaging efforts. The dataset includes the gaged proportion of each HUC12 based on a Gage Gap Analysis and information on prioritization results based on five management criteria. The management criteria include scores for ecosystem, water quality, water supply, flood, and reference gages. The priorities are the top scoring 200 watersheds for each management criteria area, for a total of 921 watersheds with overlap between the priorities. The 921 priorities are assigned a primary (highest scoring) benefit. Included is the presence of gages that could be reactivated or upgraded in the watershed. The presence of underrepresented communities, as defined in the Department of Water Resources DAC Mapping Tool, is also noted for each watershed. Data Dictionary: Field Name Range Description huc12 4469 Hydrologic unit code (HUC) size 12, subbasin, 10-40 thousand acres huc12_name Name of the HUC12 huc10 1039 Hydrologic unit code (HUC) size 12, watershed, 40-250 thousand acres huc10_name Name of the HUC10 tier 3-Jan Prioritization category number, with 1 being the highest category Prioritization category description best_in_huc10 0 or 1 1 indicates that HUC12 watershed is the top score within its HUC10, which comprises several HUC12s; 0 indicates that it is not the top scoring HUC12. primary benefit Primary benefit based on top score for management criteria. If "multi-benefit", it scores in top 100 in multiple categories; if "high combined score", it scores in the top 200 in no categories but the sum of the scores is in the top 200. If the category has a "+" this indicates a multibenefit that has a clear primary benefit in top 100. total_individual_priority_score 0 - 5 Summary of XX priority scores, with a maximum possible value of 5. ecosystem priority 1, 0.5, 0 Score = 1 is rank 1-100; Score = 0.5 is rank 101-200 for ecosystem waterquality priority 1, 0.5, 0 Score = 1 is rank 1-100; Score = 0.5 is rank 101-200 for waterquality watersupply priority 1, 0.5, 0 Score = 1 is rank 1-100; Score = 0.5 is rank 101-200 for watersupply flood priority 1, 0.5, 0 Score = 1 is rank 1-100; Score = 0.5 is rank 101-200 for flood reference priority 1, 0.5, 0 Score = 1 is rank 1-100; Score = 0.5 is rank 101-200 for reference score_summary priority 1, 0.5, 0 Score = 1 is rank 1-100; Score = 0.5 is rank 101-200 for raw score summary huc12_proportion_need_gage 0 - 1 Proportion of huc12 watershed that is ungaged, by stream segment length community_present_in_huc12 Presence and type of underrepresented community in HUC12 watershed huc12_gg_combined 0 - 4 Sum ecosystem_gg, watersupply_gg, waterquality_gg, and flood_gg huc12_gg_combined_plus_reference 0 - 5 Same as huc12_gg_combined plus reference_score huc12_raw_combined Sum Ecosystem Raw, Water Supply Raw, Water Quality Raw, and Flood Raw ecosystem_gg 0 – 1 Final ecosystem score = ecosystem_raw x huc12_proportion_need_gage ecosystem_rank Jan-96 Final ecosystem ranking based on ecosystem_gg, with 1 the highest. Equal scores receive equal highest rank. ecosystem_raw 0 - 1 Raw management priority score, without gage gap waterquality_gg 0 – 1 Final waterquality score = waterquality_raw x huc12_proportion_need_gage waterquality_rank 1 - 1299 Final waterquality ranking based on waterquality_gg, with 1 the highest. Equal scores receive equal highest rank. waterquality_raw 0 - 1 Raw management priority score, without gage gap watersupply_gg 0 – 1 Final watersupply score = watersupply_raw x huc12_proportion_need_gage watersupply_rank Jan-66 Final watersupply ranking based on watersupply_gg, with 1 the highest. Equal scores receive equal highest rank. watersupply_raw 0 - 1 Raw management priority score, without gage gap flood_gg 0 – 1 Final flood score = flood_raw x huc12_proportion_need_gage flood_rank Jan-25 Final flood ranking based on flood_gg , with 1 the highest. Equal scores receive equal highest rank. flood_raw 0 - 1 Raw management priority score, without gage gap reference_score 0 – 1 Final reference gage score = (1 – reference_gagepair_score) * reference_impairment_score reference_rank 1 – 2231 (4469) Final reference ranking based on reference_score, with 1 the highest. Equal scores receive equal highest rank. reference_gagepair_score 0- 1 Final gage pairing score, which indicates how well each watershed matches to the best fit reference gage. 1 indicates a perfect match. reference impairment score 0 or 1 Assesses whether or not the watershed is impaired (0) or potentially not impaired (1). Impairment is evaluated based on upstream water storage only. site_id_upgrade Recommended Reactivation Gage ID site_name_upgrade Recommended Reactivation Gage Name site_id_reactivate Recommended Upgrade Gage ID site_name_reactivate Recommended Upgrade Gage Name